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
What the Second Trump Administration Might Mean for Collectors
What does Donald Trump’s return to the White House mean for collectors in the USA? Will the new Administration help “Make Collecting Great Again” or will it be anti-collecting business as usual at the State Department and other government agencies? Predictions are always perilous to make, but Peter Tompa has dared to make some nonetheless.
Two Powerful Women – a Premiere in Gold and Silver
The British Royal Mint and the United States Mint collaborated to create a joint issue combining the well-known coin motifs of Lady Liberty and Britannia. They went all the way and had the chief engravers of both mints group up for a one-of-a-kind partnership.
Archive: Coins, Medals and more

Coloured Metal from Austria: Niobium Coins
In 2003, the Austrian Mint introduced a new metal with exciting characteristics to the world of coins: niobium. The beginning of a success story.

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.













CAC Grading Service Begins Full Operations
With their famous green stickers, CAC was previously known mainly for the evaluation of high-grade coins already certified by other grading services. After a test phase, CAC has now fully launched its own grading service.
Largest Hoard of Ancient Gold Coins Discovered in Luxembourg
At the end of 2019, two amateur archaeologists in Luxembourg made an impressive discovery that has now been made public: 141 exceptionally well-preserved solidi from the last third of the 4th century. It is the largest hoard of ancient gold coins ever discovered in the Grand Duchy.