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.

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CCG and JSA will provide a seamless solution for autograph collectors to have their items authenticated, graded and encapsulated by the world’s top experts.

Certified Collectibles Group to Acquire James Spence Authentication

Certified Collectibles Group acquires the leading autograph authentication firm James Spence Authentication.

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How the Romans Made Counterfeits

Counterfeits have been around in ancient Roman times, too – usually, they were cast from a copper-tin alloy. Researchers at the University of Tübingen examined the counterfeiting process and reconstructed it experimentally. A video documents their experiment.

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Hintergrund: Softcodex via Pixarbay, Helvetia: CoinInvest GmbH via Wikicommons – CC BY-SA 4.0.

Gold Coins With Altered Years: Also a Known Problem in Switzerland

In one of our last issues, we published an article by NGC about a Prussian gold coin with an altered year. Switzerland is also very familiar with such forgeries, as Patrick Huber tells us.

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Archive: Coins, Medals and more

Lot 1399: Clement X. Medal for the Holy Year of 1675 by Giovanni Martino Hamerani. Background: Edyttka1388 via Pixabay.

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.
Siege plan of the city of Frankfurt based on the original by Conrad Faber von Creuznach, 1552.

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.
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