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
Two-Euro Ticker: New €2 Coins in January 2025
Fresh additions for €2 collectors – and a surprising twist: 2025 kicks off with an unexpected yet understandable change of plans from one issuing country.
€150,000 each: The World’s Most Expensive Euro Coins – They Really Exist!
A six-figure sum for a single euro commemorative coin? Stories like this repeatedly grab headlines – most recently with rumours of a commemorative issue honouring Cristiano Ronaldo. But which price records for euro coins are actually realistic?
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.

Gold from Rhodes for the Battle for Rome
On 30 October 2024, Künker will be auctioning an aureus minted by Caesar’s assassins in 42 BC. The extremely rare piece is estimated at 100,000 euros. We tell the story of a coin that takes us back to the heart of the Roman civil war.













Acquisition of a Highly Significant Ensemble for the Coin Cabinet in Vienna
The Kunsthistorisches Museum has acquired 22 coins of the imperial couple Regalianus and Dryantilla and made them digitally accessible. This is all the more impressive considering that only about 160 coins of this imperial couple are known worldwide. These are the only Roman coins that were minted in what is now Austria.
Data Breach During Sale of 2-Euro Coin in Cyprus: How to Avoid Server Crashes
Cyprus wanted to celebrate the 20th anniversary of its EU membership with a 2-euro coin – but the party turned into a fiasco. Even before the start of sales, the server crashed; at times, customers could see the data of other buyers, and to this day, it is unclear whether the central bank will make another attempt to sell the coins.