certification

NGC and PMG acquired KM and Pick catalog systems

Certified Collectibles Group, the parent company of certification houses NGC and PMG, has acquired ownership of the KM and Pick cataloging systems, the most important international identification standards for world coins and banknotes. KM numbers, originating from Chester Krause and Clifford Mishler's Standard Catalog of World Coins, have served for decades

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Numismatic Riddle 2 – Frequently Asked Questions from the World of Numismatics

In this video we bring answers to some frequently asked questions in numismatics and collecting: What is certification in numismatics? When did numismatic certification start? Who performs numismatic certification? Why is numismatic certification performed? What is a numismatic collection? What does a numismatic collection consist of? Is money worth

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