Numismatic Guaranty Corporation® (NGC®) and Paper Money Guaranty® (PMG®) have been named the Official Grading Services of A. Karamitsos International Auctions, an esteemed auction house for world coins, notes, stamps, and other collectibles. In addition, their affiliate Numismatic Conservation Services™ (NCS®) has been named A. Karamitsos’ Official Conservation Service. Greece-based A. Karamitsos International Auctions began […]
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