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
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.
Archaeologists in Awe at the Sight of Sardinia’s Folles Hoard
Italian archaeologists are calling it one of the most important finds in recent years: up to 50,000 bronze coins dating from the 4th century have been discovered off the Sardinian coast. Apart from the outstanding size of this hoard, the coins’ condition is also astonishing.
Archive: Coins, Medals and more

Two Cityscapes on Coins From Frankfurt am Main and The Artwork That Inspired Them
Many engravers used contemporary media to make their work easier. Their coin designs were often based on well-known engravings. This is illustrated by two pieces from the Loos Collection, which will be auctioned by Künker in September 2023.

State-of-the-Art Minting Technology
Colours, special shapes, inlays, micro inscriptions, latent images and holograms – many technologies are used on commemorative coins today. In this article, we give you a little overview of the different technologies that are currently applied in the coin producing industry.

















What to Do With a Million Pennies?
Imagine you are cleaning out the house of a late relative and find 1 million cent coins in the process. What would you do with them? This is what happened to a California family. Why had this huge amount of coins been amassed? And what could they be worth?
Giant’s Causeway: A Natural Wonder at Risk – Because of Coins?
One of Britain’s most iconic natural landmarks is under threat – because tourists are decorating the famous basalt columns of the Giant’s Causeway with coins. What may seem like a well-meaning gesture is now causing increasing damage to the geologically unique rock formation.