Numismatic Guaranty Corporation (NGC)


17 September 2021
With an unparalleled commitment to accuracy, consistency and integrity, Numismatic Guaranty Company® (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 50 million coins, each one backed by the industry-leading NGC Guarantee.

NGC employs more than 30 full-time coin graders as well as outside consultants. To ensure impartiality, NGC and its full-time graders do not buy and sell coins commercially, and strict procedures are in place to prevent consultants from influencing the grades assigned to their own submissions.

The combined expertise of the NGC grading team results in unparalleled accuracy and consistency.

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.

To learn more about the services that NGC offers, go to

Coins certified by NGC realise higher prices at auctions around the world. In fact, a dozen coins certified by NGC have realised prices over $1 million so far at auctions in 2021.


They include a Great Britain 1937 Edward VIII Pattern 5 Sovereign graded NGC PF 67 Ultra Cameo that realised $2.28 million at a Heritage sale in March 2021, breaking the record for a British coin at auction. The coin is being offered again at an auction in Europe in October.


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Meanwhile, a Great Britain 1839 "Una and the Lion" 5 Sovereign graded NGC PF 66★ Ultra Cameo realised a record $1.44 million at a Heritage Auctions sale in August 2021. To see the other seven-figure coins, go to


Less than a year ago, another NGC-certified coin set a record for the highest price for an ancient coin at auction. An EID MAR aureus of Brutus that was certified by NGC Ancients sold for nearly $4.2 million in October 2020 at a sale by Roma Numismatics Limited, a United Kingdom-based specialist. 

The EID MAR’s iconic design with two daggers and a liberty cap on its reverse celebrates the assassination of Julius Caesar on the Ides of March (March 15), 44 B.C.

To learn more, go to

To contact NGC International UK Ltd., the London-based affiliate of NGC, call (+44) (0) 20 3968 3848, email [email protected] or visit