The Pobjoy Mint is celebrating the platinum wedding anniversary of Queen Elizabeth II and Prince Philip with a 2-ounce silver $10 coin.

A custom-engraved silver riyal from Saudi Arabia depicts the nation’s oil refinery plant.

Luxembourg marks the 150th anniversary of its constitution in 2018 with a circulating €2 coin.

A 1909 silver srang coin of Tibet realized $2,760 during a Nov. 26 auction in Macau.

Peru has issued a circulating commemorative 1-nuevo-sol coin as part of a new series of coins honoring the nation’s endangered wildlife.

An extremely rare gold penny of 20 pence issued by King Henry III is from the first English gold coins, minted circa 1257.

A circa A.D. 202 to 210 gold aureus issued by Septimius Severus recalls the measures he took to keep his teenage sons Caracalla and Geta from fighting.

A pair of Proof silver $10 coins from Canada highlight the complementary, interconnected ideas of yin and yang.

Two new 1-ounce silver dollars depict different themes familiar in Chinese culture to honor Chinese New Year, and neither one is a dog.

The Cook Islands and Downies celebrate the 250th anniversary of Capt. James Cook’s voyage of discovery with a set of three 1-ounce silver $5 coins.

Malta has issued the second coin in a series featuring designs from the nation’s schoolchildren. The 2017 coin celebrates peace.

Prolific Portuguese writer Raul Brandão appears on his 150th birth anniversary on a new circulating commemorative €2 coin, with a Proof version also available.

The government of Libya sought and has received import restrictions for items entering the United States, including a broad range of coins.

A bronze drachm of Antoninus Pius is one of 12 coins in a series depicting the Labors of Heracles. The coin shows Heracles capturing the Cerynean Hind.

Stack’s Bowers Galleries is set to auction off a possibly unique Venetian gold 40-zecchino coin at the New York International Numismatic Convention.

An 1855 Dutch East Indies half cent test strike, estimated around €1,000, sold in a Nov. 4 auction for a hammer price of €3,600 ($4,189 U.S.), plus buyer's fee.

The Italian State Mint’s new issue recognizes a historic treaty signing 60 years ago in Rome.

Austria marks the new year with a €5 coin depicting a lion, a motif taken from a medieval book. A silver version is also available.

German correspondent Sebastian Wieschowski explores the expanding dangers of counterfeits, in commentary found only in the Dec. 25 issue of Coin World.

Also this week, we showcased WWI commemorative silver dollar production at the Philadelphia Mint.

Prince Henry of Wales and Meghan Markle's engagement honored in commemorative coin.

The Princeton University Library Numismatic Collection recently acquired the Benjamin R. Bell Collection of Ducats, which includes this piece.

The gold half angel of Richard III is one of “a handful” of the coins surviving today, according to Dix Noonan Webb, which is auctioning the coin Dec. 13.

A Samoa Year of the Dog dollar struck by the Royal Australian Mint features a motif by Chinese artist Zhou Shaohua and a mintage limit of 88,888 pieces.

Monaco celebrates the Compagnie des Carabiniers du Prince (Prince’s Company of Carabiniers) on a new 2017 commemorative €2 coin.

A hoard of 2,200 silver oboles and deniers, along with a small leather-wrapped cluster of gold coins and other items, was found at a French abbey in September.

One of 130 examples of South Africa’s rare 1898 gold pond counterstamped with 99 will be auctioned in December in London.

A bronze medal in Numismatik Lanz’s Dec. 8 auction in Munich, Germany, tells the biblical story of Noah and the Ark.

2017 Hungarian 2,000-forint coin is the fourth issue in a series honoring Hungarian national memorials.

An extremely rare gold medal awarded in 1794 to William Keir for helping to save the Austrian emperor from capture by Napoleon is up for auction.

26-year-old Olympic gold medalist Kianoush Rostami is auctioning his gold medal to help relief efforts in Iran. He won his medal at the 2016 Rio games.

Coin World issued a special medal to celebrate the publication’s first-time attendance at the Beijing International Coin Exposition. Just 500 pieces were made.

The Royal Canadian Mint has issued a new three-coin “super” series featuring Justice League comic-book heroes.

A 1769 silver jeton celebrates the French victory in the battle for the island of Corsica.

The Nobel Prize for Chemistry awarded to Hungarian-born scientist George de Hevesy in 1944 is set to be offered at auction Nov. 23 by Morton & Eden in London.

A giant gold medal from Portugal celebrates the centennial of the victorious Peninsular War against Napoleon.

The 2017 coin celebrates the capital city of Vilnius by highlighting its architecture.

Queen Elizabeth and Prince Philip's 70th anniversary is honored on a special coin released by the British Pobjoy Mint.

A five-piece 1902 Proof set of gilt brass provincial pattern coins American-struck for China went on display Nov. 8.

The Royal Mint has a pair of Christmas 2017 coins: a copper-nickel £5 coin with the season's tree, and a silver sixpence for a traditional Christmas pudding.

The appointment of the Royal Dutch Mint's new mintmaster ushers change to Netherlands coinage with a St. Servatius Bridge privy mark.

The Royal Mint has issued its first official United Kingdom £5 coin to honor Remembrance Day, Nov. 11.

The Royal Australian Mint’s new circulating commemorative $2 coin honors Remembrance Day on Nov. 11, and features the herb rosemary in symbol of memory.

An extremely rare silver stater from Delphi was made from donations used to fund the rebuilding of the Temple of Apollo circa 336 to 334 B.C.

Tropical Fiji has issued coins for the 2018 Winter Olympics in South Korea. The two-coin offering has a mintage limited to 2,000 sets.

Andorra in December will issue a €2 coin marking its status as the only nation entirely within the Pyrenees Mountains.

An 1880 silver medal from France celebrates the French efforts at building the Panama Canal, which ultimately were not successful.

Germany’s 2016 law governing cultural property, which includes the sale of coins, is in contradiction with and “an abuse” of European Union law, experts say.

The Pobjoy Mint has issued a piedfort (double thick) silver $10 coin for the British Virgin Islands to celebrate Queen Victoria.

Dragons and pearls are often paired together in Chinese art, and the Perth Mint’s silver dollar for Tuvalu is one incarnation of those commonly joined themes.

To mark the Reformation’s 500th anniversary, the National Bank of Hungary is issuing a silver 10,000-forint coin and a copper-nickel 2,000-forint coin.

The Battle of Trafalgar is the third coin in the New Zealand Mint’s Battles That Changed History series of silver $2 coins.

Cyprus will issue on Nov. 3 a circulating 2017 commemorative €2 coin to celebrate a European city being lauded for its cultural value.

The Royal Mint is recognizing the platinum wedding anniversary of Queen Elizabeth II and Prince Philip with 11 different coins, some in platinum.

Canada celebrates the 125th anniversary of the Stanley Cup with a Reverse Proof .999 fine silver $50 coin shaped like a portion of the trophy.

This week, we also learned that a Canadian technology firm is devising a safer way to extract gold and other precious metals from electronic waste.

The Vatican City is issuing a commemorative €2 coin to mark the centennial of the Fatima apparitions in Portugal in 1917.

Businesses may no longer pay them out in change, but a few will continue to accept them in payment from their customers, at least for a short time.

Treasure in the form of ancient Roman gold and silver coins has been found at a mining site in Huelva, southern Spain.

Canada’s newest circulating dollar honors the centennial of the Toronto Maple Leafs, a National Hockey League franchise.

A new 1-ounce silver $2 coin issued in the name of Niue celebrates the astrophysical phenomena of black holes.

A contemporary counterfeit gold aureus passed as for Roman emperor Marcus Aurelius and sold in Classical Numismatic Group’s Sept. 13 auction.

The Royal Canadian Mint has issued a 2017 circulating commemorative $2 coin and silver $3 coin honoring the Battle of Vimy Ridge 100 years ago.

The fantasy 1812 Ceylon silver 4-rixdollar pieces were made in the United States in the 1970s. This example sold at auction Sept. 14 for $411.25.

Author Colin R. Bruce II, long-time editor at Krause Publications, died Sept. 3, 2017, from cancer.

Coins have long been used for various things over the centuries, but armor? Not many can say they've seen coins used as a means for protection. This tribe did.

Also this week, PCGS certified a two-tailed quarter, along with a 1968-S quarter on 90 percent silver planchet.

The nation’s second circulating commemorative €2 coin of 2017 pays tribute to Finland’s nature.

A gold aureus of Roman Emperor Nerva reflects the delicate balance of power between the military and the ruling class in ancient Rome.

In February 2017, two brothers-in-law discovered buried treasure in a field north of Lincoln, the county city of Lincolnshire, England.

France marks the 25th anniversary of the pink ribbon as a symbol of breast cancer awareness with a circulating commemorative €2 coin.

A pair of modern Russian mint errors highlight Sincona Ag’s Oct. 23 auction in Zurich.

Latvia continues its annual series of gold coins depicting classic brooches with the horseshoe fibula in 2017.

A Canadian collector-dealer and an American hobby organization are commemorating the centennial of the Balfour Declaration with different numismatic items.

The final penguin coin in the Falkland Islands’ four-coin 50-penny series honors the Magellanic penguin.

A famous Disney character is celebrating the Year of the Dog on 2018 coins — and it’s not Goofy or Pluto.

A pair of new Proof silver coins from the Royal Canadian Mint are a reminder of the simple joys of a beach vacation.

From the Golden Gate Collection, this well-traveled, worn and relatively common gold aureus of Nero results from his monetary reform of circa 63 to 64.

The coin is part of a long series of commemorative pieces marking events between 1825 and 1856.

A 2017 1-ounce silver coin from Niue celebrates the Royal Australian Air Force’s CAC Boomerang plane, which debuted 75 years ago during World War II.

When this coin was struck in 149 to 152, the younger Faustina had just been named empress by the Senate to honor her father.

This $67,000+ gold aureus led a group of 40 coins that covers a century-long span during the peak of the Roman Imperial period from A.D. 60 to 160.

The majestic and colorful monarch butterfly graces a new 3-ounce silver $50 coin from Canada.

To mark the 20th anniversary of her death, the Pobjoy Mint has issued a suite of coins celebrating Diana, Princess of Wales.

A circa 1700 silver medal tells the story of Tobias from the Catholic and Orthodox Bible.

The Patagonian toothfish (Chilean sea bass) appears on a Falkland Islands 2017 1-crown titanium coin, shown, and a copper-nickel version, both from Pobjoy Mint.

The Royal Canadian Mint is issuing a circulating commemorative dollar coin in 2017 to celebrate the centennial of the Toronto Maple Leafs hockey team.

In 2014 Rhode Island metal detectorist James Bailey located a small silver coin from what is now Yemen. The coin could be related to pirates.

A unique and previously unknown type of antoninianus coin of emperor Postumus highlights Paul-Franics Jacquier’s Sept. 15 auction.

Author Robin J. Eaglen knows his subject and writes with crystal clarity, interweaving interesting facts to enhance the narrative.

Fiji’s green titanium coin, manufactured by the Pobjoy Mint, depicts the collared lory, Fiji’s national bird. The coin is also issued in silver.

A silver 5-sol coin for Nouvelle France is of interest to collectors of French, Canadian and United States coins.

A circa 1831 or 1832 bronze convict love token from a deportee to Australia, Thomas Brownhill, is offered in Classical Numismatic Group’s sale ending Sept. 13.

The late motorcycle racer Marco Simoncelli appears on a €5 coin from San Marino marking the 30th anniversary of his birth.

Greece celebrates the cultural contributions of the famous ancient poet Sappho on a Proof 2017 silver €10 coin.

The Royal Mint of Belgium is located in Brussels, but only until Jan. 1, 2018, when it will close and production ends there.

Chinese Lunar Zodiac calendar begins the Year of the Dog in 2018, but that isn’t stopping the Royal Canadian Mint from issuing coins for it now.

A silver 1658/7 crown coin honoring usurper Oliver Cromwell highlights a Sept. 5 and 6 auction near Los Angeles.

The Southern right whale appears on new coins issued by the Pobjoy Mint for the British Antarctic Territory.

A new book explores British history as seen through the monarchs and money of the island across the ages.

The classic British testern silver coin is honored with a modern version struck in the name of St. Helena.

A 1915 Karl Goetz medal in a Stephen Album Rare Coins’ auction satirizes “American neutrality” in WWI.

An error version of the 2007 circulating £2 coin, on a solid rather than ringed-bimetallic planchet, is confirmed a decade after issue.

Astronomer Harvey Richer has authored “The Gold Coins of Newfoundland 1865–1888,” which explores the history of Newfoundland through its coinage.

The Australian coin firm Downies has coordinated the release of this gold-plated silver $8 coin celebrating the Year of the Dog for Niue.

The Roswell Incident in 1947 is the subject of a new curved, glow-in-the-dark, silver $2 commemorative coin struck in the name of Niue.

At least half of the RCM's 10 Proof 2017 In the Eyes of the Timber Wolf gold kilo $2,500 coins were minted with an obverse for the Proof silver $250 version.

The leader of Hupeh Province in China in 1911 was an unlikely choice and one of his coins features a misspelled inscription. An example is headed to auction.

Two versions of a medal pairing a panda with the Rocky Mountains are currently available, a Proof ringed-trimetallic piece and a 30-gram.999 silver version.

Romania celebrates 20 years of deepened American relations with a limited mintage gold coin depicting the Statue of Liberty.

A new limited edition Maple Leaf silver $5 coin from the Royal Canadian celebrates the World’s Fair of Money in Denver with a special privy mark.

The British Antarctic Territory and the Pobjoy Mint have issued another colorful titanium £2 coin, showing the crabeater seal.

ModernCoinMart has partnered with former United States Mint Chief Engraver John Mercanti to celebrate the movie Spider-Man: Homecoming with three new coins.

A pattern copper peso proclaiming death to Mexican President Victoriano Huerta is offered for sale during Heritage Auctions’ auction Aug. 3 in Denver.

This week in Coin World, we also learned that the Royal Mint is dipping into a new venture, buying interest in a coin dealer.

The Royal Mint makes most of its money by, literally, making money, but recently purchased a minority stake in a coin dealer, to reach out to collectors.

The ancient city of Philippi appears on a forthcoming circulating commemorative €2 from Greece.

Work to recover what experts call potentially the most valuable shipwreck ever continues in Colombia, President Juan Manuel Santos Calderón announced July 5.

Stack’s Bowers’ Galleries’ Aug. 4 auction offers a massive gold medal depicting the Great Fire of London.

German police have made arrests in the heist of a giant gold Canadian coin of the type shown here. The $1 million coin was stolen March 27 in Berlin.

A rare pattern silver medal for the First Opium War in 1842 realized more than three times its high estimate during a June 22 auction in Hong Kong.

“A complex example of bifacial push doubling is seen here in a 1994 South African 20-cent coin,” Mike Diamond writes.

Downies has created two Proof silver coins, issued in the name of Tokelau, to mark the 20th anniversary of the death of Diana, Princess of Wales.

A silver medal from 1633 marks Charles I’s return to London after being coronated in Edinburgh, Scotland.

Known as the Argyll Cabinet, one fantastic example of coin cabinetry has now found its way home to Scotland.

Author Christopher Faulkner has published a book exploring the copper tokens of Upper Canada from 1815 to 1841.

Canada’s newest series of nature-themed coins, the Proof Bejeweled Bugs silver $20 coins, begins with a purple butterfly coin.

A silver denarius showing Trajan’s column in Rome realized nearly three times its pre-sale estimate in an auction May 17 by Swiss firm Nomos Ag.

The Vatican City honors Saints Peter and Paul with a commemorative €2 coin on the 1,950th anniversary of their death.

All together, 31 gold solidi coins were found in 2012 and 2016 at an orchard in the Netherlands. Find reports in the same location extend back to the 1840s.

A Cartwheel twopence convict love token in Spink’s July 5 auction, estimated at $2,547 to $3,821, sprang from an 1841 theft of £1.10, coal, spoons and bacon.

Perth Mint celebrates the 1984 movie Ghostbusters with the first in a series of coins, a Reverse Proof silver dollar with the three main characters in color.

A new large silver $30 coin from Canada employs the Zentangle drawing method to highlight the grey wolf.

The Larsen Ice Shelf is featured on a new Proof .925 fine sterling silver £2 coin from the British Antarctic Territory and struck by the Pobjoy Mint.

The modern East India Company has issued a nine-coin set showcasing the intertwined history of the historic firm with the growth of the British Empire.

China has issued three coins commemorating the Belt and Road Forum in May, born from an initiative by President Xi Jinping.

The Royal Geographical Society in London awarded employee and scientist Edward Ayearst Reeves this gold Patron’s medal in 1928.

A bronze 1676 medal celebrating a French military victory realized a hammer price of $150 during a May 18 to 20 auction.

The Pobjoy Mint has issued plain and colorful crown coins for the Falkland Islands commemorating the 35th anniversary of their liberation.

A trio of unique precious metal coins from the Perth Mint feature Argyle diamonds as part of the design. The set is priced at $1.8 million Australian.

South Africa honors the 50th anniversary of a medical milestone, the first heart transplant, on two new silver coins.

The latest coin in the Animal Skin series from the Helvetic Mint showcases the eyes of that fearsome feline predator, the house cat.

One of 14 examples of a silver tridrachm of Delphi sold in Classical Numismatic Group’s May 10 auction.

Unpredicted redemption of the RCM’s popular silver $20, $50 and $100 coins sold at face value is causing the mint to adjust revenue down as coins are redeemed.

Hungary has issued two new coins to mark the 150th anniversary of the Compromise of 1867. The coins are the largest diameter Hungarian coins ever issued.

Tradition meets technology on the Royal Canadian Mint’s ultra-high relief Dragon Boat Festival silver $25 coin.

Switzerland celebrates yodeling on its newest silver 20-franc coin.

A group of coins stolen during World War II is now being returned to Austria.

The rockhopper penguin begins a series of four coins honoring penguins, manufactured by the Pobjoy Mint in the name of the Falkland Islands.

World mints continue to tap the popular culture mainstay Star Trek as subject matter for new collector coins.

A bronze medal recalling the horrors visited upon two brothers for opposing William of Orange is offered in Dix Noonan Webb’s June 14 to 16 auction.

The third edition of Gold & Silver Panda Coin Buyer’s Guide is now available.

A satirical bronze medal highlights the sacrifice of prisoners of war during the Second Boer War.

Three denominations of Swedish coins will soon be invalid for use in circulation.

A premier collection of gold aurei of Rome is scheduled for auction on May 29 in Switzerland.

The Netherlands is marking the 200th anniversary of the current gold ducat with a special issue featuring the coin’s original design, introduced in 1817.

Panama continues to honor the legacy of the nation’s famous canal with coinage, this time on a 2016 quarter balboa with color.

“Viking: Rediscover the Legend,” a major new exhibition by the Yorkshire Museum and the British Museum May 19 to Nov. 5 displays Viking-era coins.

Swiss International Coin Auctions, popularly called SINCONA Ag., offers more than 3,000 lots of medals and memorabilia related to shooting festivals at auction.

In addition to the Anglo-Saxon penny, we looked at rising values on lightly circulated rarities, as well as mint-stopping uproar at Finnish centennial designs.

A piece of copper 1750 Swedish plate money, bound for India in 1783 before a storm sent it to the ocean floor, is coming to auction.

A unique silver penny that was found in 2016 by a metal detectorist highlights Dix Noonan Webb’s June 14 to 16 auction.

The only known Byzantine coin die returns to the market 15 years after being sold by Classical Numismatic Group. The same firm will auction the die May 10.

Fiji celebrates its Olympics-winning national rugby team with a circulating commemorative 50-cent coin struck by the Royal Canadian Mint.

A gold medal of Napoleon III was issued by a French organization that sponsored French settlers to the California Gold Rush in the 1850s.

Estonia, Latvia and Lithuania will issue a common circulating commemorative €2 coin in 2018 celebrating 100th anniversaries the three states share.

We also reflect on how a small mintage of bullion coins impacts price points, and an experimental paper 1977A $1 Federal Reserve overprint error note.

The Mint of Finland scrapped plans for a program marking the nation’s centennial after an uproar over a coin showing an execution during the Finnish Civil War.

On the Thursday before the Christian holiday of Good Friday, Queen Elizabeth II distributed Royal Maundy coins at Leicester Cathedral.

Melbourne Mint is launching a Proof Tyrannosaurus Rex 5-ounce .9999 fine silver $5 coin in the name of Tuvalu on May 2.

Saudi Arabia introduced a new series of circulating coins late in 2016, and an American dealer can now offer them to collectors around the world.

The largest hoard of gold sovereigns found in the United Kingdom has been declared treasure.

The Netherlands celebrates the 50th birthday of King Willem-Alexander with several new collector coins.

The Monnaie de Paris’ new commemorative coins mark the World War I centennial. Three 2017 Modern Warfare coins with the same design are due for release May 5.

The Dragon of Wisdom chases a pearl on the reverse of the 2017 2-ounce silver $2 coin being issued by the Perth Mint in Australia in the name of Tuvalu.

A bronze jeton or medal marks the successful discovery and disruption of the Gunpowder Plot in England.

A rare gold coin in Bruun Rasmussen Auctioneer’s May 9 auction is a reminder of the Danish efforts to colonize what is now Ghana.

A gold-plated 5-ounce .9999 fine silver 5-cent coin, fourth in the Big Coins series from the Royal Canadian Mint, stars Alex Colville’s running rabbit design.

The annual two-volume reference work for coins of the United Kingdom is now available from a U.S.-based distributor.

A silver medal issued in 1961 celebrates the German auto-maker Volkswagen upon production of its five millionth car as a company following World War II.

A hand-engraved silver medal satirizes Oliver Cromwell’s support of the Turks during his reign. The piece sold March 14 for 18 times its pre-sale estimate.

The Pobjoy Mint is marketing a green titanium coin created in the name of the British Indian Ocean Territory and depicting the green turtle.

A 2017 circulating commemorative €2 coin from Italy honors St. Mark’s Basilica in Venice.

A 1964 gold 5-pound coin from Egypt marking the diversion of the Nile River during the Aswan Dam project is in Éditions V. Gadoury’s auction ending April 18.

The cultural property battle in Germany ratcheted up a notch on March 4 when government agents visited the Numismata show in Munich and arrested five people.

The Royal Mint launched its new 12-sided £1 coin into circulation on March 28 after months of build-up, and numerous Twitter users reported their finds.

A new numismatic dictionary offers translations between English and Spanish terms, and much more.

There are a number of places collectors can go find the new coins if they don't want to wait for one to pop up in change.

The Royal Canadian Mint in 2007 sold six examples of the 100-kilogram gold coin, one of which was just stolen from a museum in Germany.

We at Coin World report often on fake U.S. coin rarities coming from China, but not so often about fake Chinese coin rarities.

A circa 500 to 450 B.C. electrum 12th stater (or hemihecte) coin from Cyzicus in Mysia depicts an unnamed river god.

New dollar coins from Palau celebrate the sea urchin known as a sand dollar. The silver version of the coin is illustrated here.

May 3 and 4, Florida auction house and coin dealer Daniel Frank Sedwick LLC offers items recovered from the 1622 wreck of the Nuestra Señora de Atocha.

A hoard of gold “key” coins still awaits its owner. The piano isn’t coin operated, but the stash inside could pay a maestro to play it for a long time.

After surgery to remove 11 pounds of coins, the Thai green sea turtle that doctors named Omsin, or Piggy Bank, has died of blood poisoning.

Canada’s annual silver dollar marks the 150th anniversary of the nation’s Confederation. An allegorical Canada rises to face the future on the reverse.

Characters from Disney Pixar’s 2006 film Cars are featured on two colorful new silver $2 coins from the New Zealand Mint.

The Pobjoy Mint’s latest building-shaped coin celebrates America’s Capitol. The copper-nickel dollar was issued by the British Virgin Islands.

An imitation or counterfeit 1759 silver 18 gröscher of Berlin was struck of debased silver in an attempt to defraud the Russians then ruling East Prussia.

The Royal Canadian Mint has issued the world’s first circulating, colorized, glow-in-the-dark coin, a 2017 $2 coin showing the northern lights on the reverse.

You might remember when, in 2012, the Jersey Heritage organization was alerted to the Catillon II hoard, some 70,000 Celtic coins from the Iron Age.

Hutt River Province: ever heard of it? Jeff Starck explains the history of the micronation and its coinage in a recent #CWShowAndTell video.

The catalog was created in a response to an enormous and continuously increasing interest in and demand for the coins.

The Republic of San Marino is issuing a new series of euro coin designs in March, marking the first overhaul to the designs since their debut in 2002.

Luxembourg has released its first new circulating commemorative €2 coin of 2017. What's on it?

Canadian wildlife continues to dominate the nation’s new bullion coin designs.

Also this week, readers enjoyed posts about the cost to produce and distribute Lincoln cents and the upcoming release of the 2017 American Liberty gold coin.

It’s standard for tourists to toss coins into a fountain, pool or other body of water for good luck. But it's not always a good idea.

The hoard includes of 24 silver groats, which date between 1464 and 1502. British Museum experts examined the coins and deemed them treasure.

All “struck-through” errors are interesting, but maybe the most spectacular form is the brockage, occurring when the intervening object is a coin.

Later this month, a new 12-sided £1 coin will be launched, and all UK residents will have to use or exchange all of their round pounds by Oct. 15.

Slovakia has issued a circulating commemorative €2 coin marking the 550th anniversary of the University Istropolitana.

The humpback whale is the subject of the fourth coin in the private New Zealand Mint’s Great Migrations series of silver $2 coins for Niue.

The coat of arms of Pope Francis replaces his image on new euro coins for the Vatican City starting in 2017.

The first issue in a planned annual ringed-bimetallic silver-niobium $2 coin series from Palau shows the planet Saturn.

Germany honors another of its 18 states, Rheinland-Palatinate, with its annual Bundeslander circulating commemorative €2 coin for 2017.

A distributor in the United States is offering the annual medals celebrating the Swiss tradition of marksmanship.

A rare silver sestertius of Roman emperor Titus celebrates the opening of the Colosseum. It realized £372,000 ($464,981 U.S.), nearly five times its estimate.

An international coin program using deep relief via "four layer minting technology" turns to an American subject for a 2017 offering.

A 2017 Swiss 20-franc coin celebrates two reformers instrumental in the Protestant Reformation, which began 500 years ago.

The tragic World War II sinking of an Australian warship carrying many noncombatants is the subject of the Royal Australian Mint’s newest commemorative coin.

The United States has a long history of unofficial coins and tokens that have circulated alongside official Mint issues.

The ninth edition of "Gold Coins of the World," by Arthur L. Friedberg and Ira S. Friedberg, is now available, eight years after the eighth edition.

Hadrian — builder of the wall — also produced cistophori (large silver coins) in the provinces, in two distinct phases.

Sculptor Andor Meszaros created potential designs for Australia’s 1966 decimal currency. Silver medals of his Goose dollar design were later struck and sold.

The cut, counterstamped and otherwise necessity coins of the West Indies have always interested Paul Gilkes, as he has a family link to that part of the world.

The new 12-sided £1 coin will begin circulating in March. How long will the current round version be accepted as legal tender?

Shipwrecks are fascinating for numismatists, no doubt about it. And when the ship that sunk carried a gold fortune, it takes that interest level up a notch.

The book is noteworthy because it contains 144 large woodcut chiaroscuro medallion portraits of important rulers from Julius Caesar to Ferdinand III.

Slovenia marks the 10th anniversary of the euro in Slovenia with a circulating commemorative €2 coin featuring a ring of flying swallows.

The nation of Turkey issued a circulating commemorative ringed-bimetallic 1-lira coin in memory of those who fought and died in an attempted coup in 2016.

A rare and little understood silver crown from a breakaway state in Africa was one of many highlights in Stephen Album Rare Coins’ Auction No. 27.

Jeff Starck returns in our latest #CWShowAndTell video with an intriguing coin (or perhaps "coin" is a more fitting label) with an intriguing story.

Auctions, upcoming issues, and free chocolate coins. The show had something for every world coin collector.

The Pobjoy Mint celebrates the sapphire jubilee of Queen Elizabeth II with a limited-edition “two-headed” coin.

France celebrates the artistic legacy and life of sculptor Auguste Rodin with a 2017 circulating commemorative €2 coin.

The ancient tradition of Olympic Games also includes an ancient tradition of Olympic coinage. An example of this early commemorative coinage is for sale.

"These late Roman bronze coins are common, eminently affordable, but they're also rich in history," Jeff Starck says in our latest #CWShowAndTell video.

In its final year at the Waldorf-Astoria, the New York International Numismatic Convention served as the center of international numismatics to kick off 2017.

World coins that depict the animals of the 12-year ancient Chinese lunar calendar comprise some of the most popular coin series ever.

Though modern scholars have learned a great deal about ancient coinage, there are still more mysteries than there are confirmed facts.

The course of British history changed just over 950 years ago on fields of battle near Hastings. This medal honors that.

The Royal Canadian Mint marks the anniversary of the nation’s founding on the Proof 2017 silver dollar coin, the newest issue in the annual series.

The Sower has been a pattern in French numismatic history for over a century, originally designed by Oscar Roty for a Department of Agriculture medal in 1887.

The Pobjoy Mint’s prolific 2017 program of colorful titanium coins continues with 2017-dated releases for two island nations.

The fourth coin in the Perth Mint’s War Posters series celebrates the movement to send photos from home to soldiers on the front lines.

A slew of big names and major themes are on tap for the United Kingdom’s commemorative coinage in 2017.

The 2017 Berlin Chinese Panda medal celebrates a special exhibit of Chinese coins on display in Berlin.

The Pobjoy Mint continues its flurry of colorful titanium coins, with a new blue £2 coin celebrat­ing the blue whale.

The Central Bank of Malta has issued the first circulating commemorative €2 coin under a new program titled “From Children in Solidarity."

Germany has unveiled designs for its second ringed polymer €5 coin. The 2017 issue celebrates the tropics.

Dix Noonan Webb’s Feb. 15 auction in London offers the return of 194 Roman bronze coins to market, some 75 years after the collection was formed.

During World War II, "besides cranking out tens of millions of U.S. coins, America's Mint helped fill orders for the Allies."

Numerous past columns have recounted the various ways in which normally oriented incuse (or sunken) design elements can appear on a coin. Here's a new one.

Bidding is set to open Jan. 12 for RR Auction's sale of Summer and Winter Olympics winners' medals, participation medals, Olympic torches and related items.

Greece has issued a circulating commemorative €2 coin honoring the life and legacy of composer Dimitri Mitropoulos.

The Pobjoy Mint, in cooperation with the British Virgin Islands government, has issued a 2017 .990 fine green titanium $5 coin celebrating the hummingbird.

Andorra’s newest circulating commemorative €2 coin honors a milestone in the nation’s public media.