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
Defamatory Attack on IADAA And Its Officers – a Response
A French newspaper article claims IADAA chairman Vincent Geerling to be involved in trafficking antiquities. A close look reveals a distortion of facts – or how the journalist and the authorities simply ignored them. With consequences not only for the accused.
2-Euro Ticker: New Releases in May 2025
Luxembourg celebrates the 25th anniversary of the Grand Duke’s accession – and prepares for his farewell – with a little help from a German mint. Italy, Finland, and Malta also delight the euro coin community with new designs.
Archive: Coins, Medals and more

Planchet Error, Overstrike, Double-Strike, Etc.: Which Errors Affect the Price of a Coin? – Part 1
The price of a coin does not only depend on its rarity and grade. There are many things that can affect a specimen’s value in a positive or negative way. This overview will help you to understand common terms, to use them confidently and to understand them in their context.

SINCONA Offers Spectacular Swissmint Patterns
In its Auction 87, SINCONA AG showcases Swissmint patterns. They are truly remarkable as they are true patterns that were not produced for collectors but are natural by-products of the coin creation process.













World’s Fair of Money Convention Medal 2023
The 2023 World’s Fair of Money will have a special Convention Medal. Medallic artist Jamie Franki has designed a medal featuring what makes the conventions’s location Pittsburgh unique in the world.
Donald Trump: Now Also a Coin Dealer and Designer
Supporters of the Republican US presidential candidate Donald Trump can now show their backing numismatically: following sneakers and trading cards, Trump has now launched a commemorative medal under the “Trump Coins” brand.