During the period when it was just a hobby, and especially later when it became a scientific discipline, numismatics constantly developed. This development was accompanied by frequent innovations that enabled collectors, archaeologists, and historians to more easily access information (in the form of catalogs), properly sort and preserve it (first as numismatic
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
NGC and PMG acquired KM and Pick catalog systems Read more »
Certification (grading) of coins and banknotes in our region has not yet taken off as it has in the rest of the world, especially in the United States and Asia. Because of this, many numismatists rightly ask: What is certification actually? What is its purpose? And what
What is the point of certifying coins and banknotes? Read more »
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