Numismatic Guaranty Company (NGC) is an international third-party coin grading and certification service based in Sarasota, Florida. It has certified more than 50 million coins. NGC certification consists of authentication, grading, attribution, and encapsulation in clear plastic holders. NGC is a subsidiary of Certified Collectibles Group (CCG), which owns six collectible certification services and is in turn owned by Blackstone, a multibillion-dollar New York City hedge fund. NGC was founded in 1987 in Parsippany, N.J. by John Albanese, who also founded Professional Coin Grading Service. A majority stake was later purchased by coin dealer Mark Salzberg. Along with CEO Steven Eichenbaum, Salzberg owns the CDN Greysheet, a price guide for coins similar to the Kelley Blue Book. NGC commenced operations at its new location in Sarasota, Florida in 2002. In 2006, NGC relocated to a 60,000-square-foot secure building that also houses its CCG-owned sister companies, including Numismatic Conservation Services (NCS), Paper Money Guaranty (PMG), Certified Guaranty Company (CGC), Certified Sports Guaranty (CSG), and Classic Collectible Services (CCS). In 2008, ancient coin certification began (NGC Ancients). NGC has other locations in Hong Kong, China; Shanghai, China; Munich, Germany; and London, United Kingdom. In 2021 Certified Collectibles Group was acquired by Blackstone. Also in 2021, owner Mark Salzberg's son Andrew (formerly of ModernCoinMart) was appointed Executive Vice President of NGC. More information...
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