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
Cristiano Ronaldo on a Commemorative Coin from Portugal? Controversy Surrounds an AI Fake
A purported special edition coin honouring the world-famous football icon is making headlines. However, it’s unlikely that Ronaldo and his peers will ever appear in your change – and there are compelling reasons for this.
Ulrich Werz (1964-2023)
The numismatist Ulrich Werz died on June 14, 2023. He was known for his work on coin finds and his studies on Roman countermarks. Claire Franklin remembers him.
Archive: Coins, Medals and more

Sisi and Franz: Commemorating the Dream Wedding that Was Actually a Nightmare
As part of the phaleristic auction 415 on 28 October 2024, Künker will be auctioning the set of gold medals that Emperor Franz Joseph presented to his father-in-law, Duke Maximilian Joseph in Bavaria. It is the numismatic souvenir of a wedding that turned out to be a nightmare for his daughter – young Elisabeth, who is better known as Sissi or Sisi today.

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.













Germany’s New Platform Tax Transparency Act: A Problem for eBay Coin Dealers?
Germany’s new Platform Tax Transparency Act has caused great concern among German coin collectors. Will they have to explain themselves to the tax authorities whenever they sell pieces of their collection? In most cases, the answer is no. Unless their hobby turns into a regular side-line.
How Canada’s Coins Celebrate the Coronation of King Charles III
The Royal Canadian Mint released collector coins in celebration of King Charles’ Coronation. The coins feature the new Royal Cypher but not yet the King’s portrait. Find here more information about when to expect his portrait.