Matidia.
Denarius (112 AD), Rome.
Condition: very rare, vf /vf+.

Julian II. Apostata as Caesar.
Solidus (355–357 AD), Rome.
Condition: unc

Frederik IV.
Double-Ducat 1704, Copenhagen.
With certificate of authenticity.
Condition: ef-

Johann Wilhelm.
Ducat 1753, Nuremberg.
Condition: rare, lightly worked, vf-

Archive: People and Markets
€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?
A New Member to Join the SINCONA Team: Michael Otto
The SINCONA team is excited to welcome a new member. As of 1 January 2025, Michael Otto is working at the SINCONA Group’s headquarters in Zurich. He is looking forward to taking over the position as Head of Numismatics.
Archive: Coins, Medals and more

Important Collection of Islamic Glass Weights at Numismatica Genevensis SA
Islamic glass weights are fascinating due to their resemblance to coins and their still disputed function. Numismatica Genevensis is able to offer an entire collection in museum quality in its upcoming Islamic auction.

Gustav III: A Conservative Revolutionary
On 20 June 2023, Künker will auction off medals that the Swedish King Gustav III himself gave as a present to the young Peter Frederick Augustus of Oldenburg. These medals are a testament to the policies of the king who was shot dead at a masked ball in 1792.

















The Numismatic Index on 11 May 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.
Change Of Leadership at the American Numismatic Society
Gilles Bransbourg will be stepping down from his position as ANS Executive Director in September 2024. Dr. Ute Wartenberg Kagan, currently President of the ANS, will return to this position, which she previously held from 1999 through 2019.