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
An “Error Coin” No Collector Is Happy About
The quality of the country’s collector coins is the subject of heated debate in Germany. This regards silver coins and colour issues. But the problem is not limited to German mints – the phenomenon of “milk spots” in particular is a major concern for coin producers around the world.
NICAC Raises Concerns Over 2026 World Cup Commemorative Coins
The Numismatic Industry Coinage Advisory Committee (NICAC) released a report expressing concerns with legislation authorizing the minting of coins commemorating the 2026 FIFA World Cup. This gives us a fascinating insight into what happens behind the scenes when a coin is issued for a major sporting event.
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.

Joachimsthal and the Reformation
On 29 January 2025, Künker will auction a series of valuable Renaissance medals. They feature biblical topics and were minted in the region of Joachimsthal to spread the teachings of the Reformation. Johannes Mathesius, the author of Luther’s Table Talk, may have been at the origin of some of the motifs.













ICOMON Annual Conference 2024 – Call for Papers
ICOMON is looking for presentations for their annual conference 2024, which will be held in Stockholm. One topic that will be particularly in focus is Cross-Organization Collaborations. Abstracts can be submitted until 31 January 2024.
A New Era for the Caribbean: The Caribbean Guilder is Coming
In March 2025, a new currency will be introduced – the Caribbean Guilder. Collectors can look forward to intricately designed coins and banknotes that highlight the cultural and maritime identity of the islands of Curaçao and Sint Maarten.