About NGC

With an unparalleled commitment to accuracy, consistency and integrity, Numismatic Guaranty Corporation (NGC) is the world's largest and most trusted third-party grading service for coins, tokens and medals. Since 1987, NGC has graded more than 40 million coins, each one backed by the industry-leading NGC Guarantee.

Our Holder

NGC invested more than $1 million in research and development to create the most advanced protective holder for coins, tokens and medals. Designed for long-term preservation, the NGC holder is used by the Smithsonian Institution and other museums around the world to protect their most treasured rarities.
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Our Grading

NGC employs more than 30 full-time coin graders who are prohibited from buying and selling coins commercially to ensure impartiality. The combined experience and expertise of the NGC grading team results in unparalleled accuracy and consistency.
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Our Guarantee

Collectors have greater confidence in NGC-certified coins because the coins are backed by the NGC Guarantee, the strongest in the industry. The NGC Guarantee provides one of several remedies in the rare event that an NGC-certified coin is determined to be not genuine or overgraded.
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review process
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Higher Prices Realized

Collectors and dealers pay more for coins graded by NGC and, as a result, NGC coins and collections have achieved many world record prices at auction. Many NGC-certified coins have broken the $1 million barrier, including the first Chinese coin ever to do so.

Most Coins Graded

NGC has graded more than 40,000,000 coins from virtually every past and present country

Unique Partnerships

NGC is the official grading service of the American Numismatic Association (ANA), the only coin collecting organization chartered by the US Congress, and the Professional Numismatists Guild (PNG).

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