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Coin grading is the process of determining the grade or condition of a coin, one of the key factors in determining its collectible value. A coin's grade is generally determined by six criteria: strike, preservation, luster, color, attractiveness, and occasionally the country/state in which it was minted. Several grading systems have been developed.
Numismatic Guaranty Company ( NGC) is an international third-party coin grading and certification service based in Sarasota, Florida. It has certified more than 60 million coins. NGC certification consists of authentication, grading, attribution, and encapsulation in clear plastic holders. NGC is a subsidiary of Certified Collectibles Group ...
Professional Coin Grading Service ( PCGS) is an American third-party coin grading, authentication, attribution, and encapsulation service founded in 1985. The intent of its seven founding dealers, including the firm's former president David Hall, was to standardize grading. [4] [5] The firm has divisions in Europe and Asia, and is owned by ...
International Coin Certification Service ( ICCS) is a Canadian third-party coin certification company located in Toronto, Ontario. [1] [2] ICCS certification consists of grading, authentication, grade qualification, variety attribution, and other determinations. ICCS grades most world coins but is particularly known for grading Canadian dollars.
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20 million (as of 2020) G2A.COM Limited (commonly referred to as G2A) is a digital marketplace headquartered in the Netherlands, [1] [2] with offices in Poland and Hong Kong. [3] [4] The site operates in the resale of gaming products by the use of redemption keys. Other items sold on the site are software, prepaid activation codes, electronics ...
Originally founded in June 1972 as the American Numismatic Association 's authentication service, ANACS expanded into third-party coin grading in March 1979. ANACS was founded in response to the rise in counterfeit and altered coins in the numismatic marketplace. During the coin collecting boom of the 1960s, counterfeiters would alter common ...
Third-party grading. Third-party grading (TPG) refers to coin grading & banknote grading authentication, attribution, and encapsulation by independent certification services. These services will, for a tiered fee depending on the value of the coin, "slab" a coin and assign a grade of 1-70 on the Sheldon grading system, with 1 being the lowest ...