Friedrich Wilhelm, the Great Elector.
Ducat 1686 LCS, Berlin.
Extremely rare.
Attractive piece.


Maximilian II.
Ducat 1855.
Only a few pieces are known.
Extremely fine-uncirculated.

Ferdinand Albrecht I.
Löser in the weight of 4 Reichstalers 1670, Clausthal.
Extremely rare.
Attractive piece.

Friedrich Adolf.
5 Ducats 1711, Detmold.
Only known piece.
Extremely fine-uncirculated.

6 Ducats, n. d. (1765-1790), with the title of Joseph II.
NGC MS 62 PL.
Extremely rare.
Attractive piece from polished dies.
Almost uncirculaed.

Johann Adolf, 1590-1616.
Portugalöser (10 ducats) n.d., Eutin.
Extremely rare and of particular
significance in monetary history.
Attractive piece.

Leopold I, 1657-1705.
20 Ducats, n. d. (after 1666), Hall,
by M. König.
Extremely rare.
Almost extremely fine.

Archive: People and Markets
Euro Counterfeits: Fraudsters Increasingly Target Commemorative Coins
The number of counterfeit euro coins surged dramatically in 2023, with €2 coins—particularly commemorative issues—being the primary targets. Counterfeiters are employing increasingly sophisticated techniques, while investigators are analysing new varieties to track down illegal minting operations.
CIT: The Last Issue in the Real Heroes Series – Astronaut
With the last issue of the Real Heroes series, CIT pays tribute to the courage of astronauts. The focus is on an iconic scene that was implemented with technical perfection as a reflection in the visor of a spacesuit.
Archive: Coins, Medals and more

Marcus Antonius: The Loser Who Did Not Write History
Künker’s auction 419 features numismatic rarities from the Roman civil war that followed Caesar’s death. In addition to the Eid Mar denarius, aurei of Marcus Antonius will cross the auction block. We will re-tell his story – from his point of view, not that of Augustus.

The Gnadenpfennig – An Object Between Decoration, Medal, and Coin
Gnadenpfennigs are an extremely rare category of numismatic objects. Künker is proud to offer nine lots in auction 418 on 29 January 2025 that are, or are likely to be, gnadenpfennigs. We explain the purpose of these issues and when they were created.













Swissmint as Guest of Honour at the World Money Fair
Modern coins for a modern Switzerland – that is the mission of Swissmint. As the guest of honour at the 2025 World Money Fair, Swissmint has many attractions in store for collectors and visitors. Read on to find out more.
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.