Coin World is looking back at its five most-read stories of the week, according to reader metrics.

Every collector should know the fundamentals of rainbow toning and how to distinguish that from artificial patinas.

Collecting casino chips from the early days of Los Vegas has become one of the hottest spots in exonumia, with prize disks fetching outsize prices.

Today, coins of the Carson City Mint are, as a class, more appreciated than are issues from any other of the Mints in operation in the past two centuries.

Get agreements in writing is one of the “Five Rules for Staying Out of Legal Trouble.”

The United States Mint released color-coded design sketches showing the different finishes on the 2014-D Enhanced Uncirculated Native American dollar.

A three-judge panel at Philadelphia’s Federal Court of Appeals heard oral arguments Nov. 19 from the government and the Langbord family.

America the Beautiful quarter dollars were clearly the target of the hunt this month for variety collectors.

Pre-strike planchet damage is infinitely variable in its severity, extent, location, and appearance.

A mule is a coin, medal or token struck with dies not intended to be paired together. Washington medal is not a mule error.

Congressional leaders are to present a congressional gold medal Dec. 10 honoring the Civil Air Patrol.

The Sunset Hill Collection of Proof Morgan Dollars and the Bob Simpson Mint State Barber Dime Collection highlight the Dec. 18 Legend Rare Coin Auctions sale.

CoinWorld.com gives you a quick look at what's going on today in the world of numismatics.

Marc Emory has written The Time cellar, a story easily accessible to people who know nothing about coins, and yet entertains the dickens out of people who do.

The 1917-S Type 1 Standing Liberty quarter with an error is rare, and with a planchet flaw that created a hole, even rarer.

Prolific author Kevin Flynn has self-published The Authoritative Reference on Seated Liberty Half Dimes.

The unique Louis E. Eliasberg Sr. Collection of Abraham Lincoln medals in gold will cross the auction block Feb. 5 and 6, 2015.

Liz Ensz, a Chicago-based artist, was working on an intriguing project during ANA Summer Seminar: a Ronald Reagan cent.

Sales by the United States Mint of the Uncirculated 2014-W Lou Hoover First Spouse gold $10 coin are currently the lowest for the series.

Appraiser Alvin Stern will be putting on a seminar about that cleaning and conserving coins on Dec. 6 at the Houston Money Show.

The United States Mint announced Nov. 24 the revised product limit for the 2014 50th Anniversary Kennedy Half Dollar Silver Coin Collection will be 225,000.

A 51-millimeter Martin Van Buren Indian peace medal struck in silver is among 396 lots offered by Early American History Auctions in its Dec. 12 sale.

A collection as extensive as St. Louis numismatist Eric P. Newman’s has its share of top-tier rarities, but it also contains many other more ordinary coins.

The 2014 Holiday Gift Guide was released Nov. 24 by the United States Mint.

A collection as extensive as St. Louis numismatist Eric P. Newman’s has its share of top-tier rarities, but it also contains many other more ordinary coins.