Two bank notes printed on a somewhat unique substrate, not cotton paper, not polymer, but walrus skin parchment, stood out in the Jan. 9 Heritage Auctions world currency auction in Orlando.

Invisible ink may be the next counterfeit deterrent, as scientists in India experiment with new chemicals that have multiple possible security applications.

The West African CFA franc, since Dec. 26, 1945, the currency used by eight of the continent’s French-speaking countries, will soon be no more.

Critics are asking whether Bank of England polymer notes are holding up as well in circulation as expected.

The Hong Kong Monetary Authority’s three currency-issuing banks will introduce new $20 and $50 notes on Jan. 14, in time for the Lunar New Year celebrations Jan. 25.

A diverse quintet of 20th century world bank notes are expected to surpass $25,000 each at the Stack’s Bowers Galleries world currency auction in New York City on Jan. 18.

The Central Bank of Myanmar introduced a 1,000-kyat note on Jan. 4, featuring Bogyoke Aung San, founder of the nation.

Trinidad and Tobago continues its newest bank note series with a $100 note made of polymer and featuring new technology.

The Bank of Ghana introduced 100- and 200-cedi bank notes, worth $18 and $36, on Dec. 2, continuing a series that began with smaller denominations.

An exhibit at the Library of Congress explores aspects of early American paper money, including the development of an anti-counterfeiting printing technique developed by Benjamin Franklin.

Longstanding U.S. policy to not demonetize its federal paper currency is both a stabilizing force and a temptation to counterfeiters, who produce high quality fakes of the $100 FRN type issued from 1996 to 2013, before more high-tech counterfeit deterrents were added.

A polymer commemorative bank note with a face value of 100 lei ($23.14) was released by the Central Bank of Romania on Dec. 1, targeted at collectors and carrying a premium of 50 percent over face value.

The BEP in its final production reports for Fiscal Year 2019 document the transition from Series 2017 Federal Reserve notes to Series 2017A notes, including $2 notes in the newer series.

The National Bank of Ukraine is completing the five-year upgrading of its currency system with the scheduled release of a new 50-hryvnia note on Dec. 20 and a 200-hryvnia bill on Feb. 25.

The Bureau of Engraving and Printing will release the Year of the Rat 2020 set in its Lucky Money Lunar Calendar product line at noon on Dec. 11.

The Central Bank of Cuba is commemorating the 500th anniversary of the city of Havana with a 2019 500-peso commemorative bank note.

Contents of Warren Buffett’s wallet, new discoveries of Washington quarter dollar doubled dies, and the history of America’s earliest medals for military valor are among topics found only in the digital and print editions of the Dec. 16 "Coin World."

The Bank of Scotland has unveiled the designs of two polymer £20 notes, including this regular issue and a commemorative version, to be issued early in 2020

PCGS Banknote, which will begin accepting submissions of U.S. paper money for authentication, grading and encapsulation starting Jan. 2, has released new details about the services it will offer.

Columns in the latest issue of "Coin World" focus on a number of themes, including a reader's discovery of an error note, a columnist's discovery of railway tokens in coin rolls, and a cast counterfeit of a key date coin.