Matidia.
Denarius (112 AD), Rome.
Condition: very rare, vf /vf+.

Julian II. Apostata as Caesar.
Solidus (355–357 AD), Rome.
Condition: unc

Frederik IV.
Double-Ducat 1704, Copenhagen.
With certificate of authenticity.
Condition: ef-

Johann Wilhelm.
Ducat 1753, Nuremberg.
Condition: rare, lightly worked, vf-

Archive: People and Markets
The Numismatic Index on 25 June 2023
The numismatic index numindex transparently shows how the prices of selected coins change over time. In the style of a stock index, it was designed for collectors who consider their collection an investment. Find out about the current state of the index.
Museum of American Finance Announces New Exhibit Headquarters
The Museum of American Finance, a Smithsonian affiliate, is relocating to Boston with a new 5,400 sq ft space set to open on July 1, 2026. This marks its first permanent exhibit location since leaving 48 Wall Street in New York in 2018 after a flood damaged the facility but spared its renowned collections.
Archive: Coins, Medals and more

The First Piece of Mail Sent Using a Stamp to Be Offered at Sotheby’s
A Penny Black affixed to a Mulready envelope is among the most valuable items in Philately ever offered at auction. The earliest posted envelope using a prepaid stamp, dating to 1840, will be sold at Sotheby’s with an estimate of $1.5–2.5 million.

Counterfeit Detection: Altered Prussia 20 Mark
An NGC expert gives us insight into his everyday life. He shows how the year on a coin from the German Empire was altered by a coin doctor.

















10th Edition of Friedberg’s Gold Coins of the World
You cannot do without this classic when it comes to identifying gold coins! Now, the 10th edition of Coins of the World has been published.
Questions and Answers for Coin Collectors Regarding the Death of Pope Francis
Following five different coin series since 2002, the Vatican is set to issue new euro coins this year. When the change to a new pope on the coins will take place, and how the Sede Vacante will be commemorated numismatically, remains unclear – as does the timing for the return of the Vatican’s coin issuing office for collectors.