Archive: People and Markets
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.
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

An Introduction to Axumite Coinage
With the collection of Dr. Stephan Coffman, a highly significant ensemble of coins from the great ancient African kingdom of Axum is sold at Leu Numismatik. Learn more about the history of Axum and the often disregarded Axumite Coinage in this detailed article.

Coins and Medals of the Popes: Representatives of the Catholic Church
Since the 16th century, people throughout Europe have collected coins and medals of the popes. Papal issues were often intended to be collectibles rather than a means of payment. Künker presents a little introduction to this fascinating subject.










CCG to Open Tokyo Office in 2024
The Certified Collectibles Group® announced that it will open an office in Tokyo, Japan, in 2024. The new CCG office will make it easier for collectors and dealers in Japan and the surrounding region to submit to NGC, PMG and CGC.
CoinFindsViewer – Roman Coin Finds in Southern Germany
Recently a new numismatic project went online: the CoinFindsViewer represents the first large-scale visualization of Roman coin find data in southern Germany. It enables users to interactively explore the dataset along the Roman frontier, the Limes, and its hinterland across various historical periods.