Numismatic Guaranty Corporation® (NGC®) and Paper Money Guaranty® (PMG®) have been named the Official Grading Services of VCoins, a major online marketplace for ancient and world coins as well as other collectibles. In addition, their affiliate Numismatic Conservation Services™ (NCS®) has been named VCoins’ Official Conservation Service. US‐based VCoins, founded in 1998, has tens of […]
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