Archive: People and Markets
Medaljer Konstnärer – Medaillen und ihre Künstler – Medals and Their Artists
Roberto Delzanno presents his publication on five important Swedish medalists. The book of over 400 pages features texts in Swedish, German and English, as it aims to introduce Swedish medal art to the broader international collector community.
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

The Suffering of Leiden – A Siege During the Dutch Revolt
The third part of the Beuth Collection that Künker offers in Auction 420 contains many historically interesting emergency and siege coins. They were issued by the Dutch towns besieged by Spain during the 80 Years' War. One of these towns was Leiden, which to this day commemorates the end of the siege every year with a festival.

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.











2-Euro Ticker: New 2-Euro Coins in July 2024
Croatia excites 2-euro collectors with a new city series – and significant improvements in minting quality. Portugal’s online shop has not been running smoothly.
ACCG Introduces Their New Executive Director
Since January 1, 2024 the Ancient Coin Collectors Guild has had a new Executive Director: Keith Twitchell. Twitchell replaces Peter Tompa, who will remain active on the ACCG Board of Directors