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
Introducing Nanoshine: CIT’s Butterfly
CIT’s Butterfly seems delicate, fragile and beautiful, just like its real-life model. The technical marvel behind it only becomes apparent at second glance. Nanoshine is a completely new technology with the potential to transform the aesthetics of coin design.
British Museum Sets Out Plans to Digitize Fully the Collection
After the disappearance of thousands of objects, the British Museum aims to document all of their over 2 million objects within the next five years and make them available online. Mark Jones on why he wants to increase access to the objects now.
Archive: Coins, Medals and more

Gold at Record Highs: Melt Down or Preserve Historic Gold Coins?
Gold is now more expensive than ever. This trend has put many collectors and dealers in a moral dilemma: Which gold coins can be sold or melted down without hesitation, and where do the real treasures lie?

As the King Lay Dying… – The Most Spectacular British Gold Coin of the Modern Era
In Part 4 of its extraordinary British Collection, SINCONA will be presenting several extremely rare patterns, some of which are the best-preserved specimens available on the market. In this article, we tell their story.













The Numismatic Index on 25 June 2023
The numismatic index numindex transparently shows how the prices of selected coins change over time. In the style of a stock index, it was designed for collectors who consider their collection an investment. Find out about the current state of the index.
Hideo Futahashi (†2024)
We have only now learned that Hideo Futahashi has passed away. Mr. Futahashi was a key figure for Europeans looking to gain a foothold in the Japanese coin market. He was one of those open-minded Japanese who loved introducing European coin enthusiasts to the beauty of his country.