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Numismatic Guaranty Corporation

When NGC was founded in 1987, it heralded the introduction of a new standard of integrity in coin grading. From the beginning NGC focused on only one objective, a standard of consistent and accurate grading.

About NGC

As NGC has grown to become the leader in third-party grading services, we have maintained a steadfast and uncompromising commitment to this standard. The knowledge, integrity and dedication of NGC’s team of numismatic professionals ensures you a level of grading consistency unparalleled among grading services. This record of consistency, built over the years, has helped to foster greater stability throughout the rare coin marketplace.

NGC Guides & Services

NGC 30th Anniversary Video

6/21/2017

The video highlights some of the company’s achievements, including its international expansion

Numismatic Guaranty Corporation® (NGC®) has released a video to celebrate its 30th anniversary.

Founded in 1987, NGC has been committed to accuracy, consistency and integrity. These principles have led NGC to become the world’s largest third-party coin grading service with more than 37 million coins certified.

The NGC 30th Anniversary Video highlights some of the company’s achievements, including its international expansion. NGC now grades coins full-time at its offices in the United States and China and operates Official Submission Centers in China, Germany, Hong Kong, Korea, Singapore and Japan.

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Numismatic Guaranty Corporation (NGC)

Counterfeit Coin Detection – 1872 Seated Liberty Silver Counterfeit Dollar

1872 Seated Liberty Counterfeit Dollar By Max Spiegel – Numismatic Guaranty Corporation ......   Rough texture and minuscule raised dots within the recesses are clues that...

New Chinese Medals: The Songs of Summer

The China Garden of Life medals celebrate insects that are honored in Chinese tradition By Peter Anthony - Numismatic Guaranty Corporation .......   Spring has already slipped into...

NGC Signs American Astronaut Clayton Anderson to Autograph Labels

Shuttle astronaut spent nearly half of 2007 at the International Space Station Numismatic Guaranty Corporation® (NGC®) has announced that American astronaut Clayton Anderson will individually...

Coin Grading – A Closer Look at Details Grading

What to know before you buy a coin with a Details grade By Jeff Garrett for Numismatic Guaranty Corporation (NGC) ......   When it comes to grading...

Learn Coin Grading From NGC: Prooflike and Deep Prooflike

This new monthly feature in the NGC eNewsletter promotes a better understanding of NGC’s coin grading and designations NGC coin grading uses a numeric grade...

NGC Certifies Newman’s Unique 1792 Washington President Gold Eagle

Numismatic Guaranty Corporation® (NGC®) has certified the late Eric P. Newman’s most cherished coin: the unique 1792 Washington President gold eagle that researchers believe...

Counterfeit Detection – 1937 Texas Half Dollar Commemorative Coin

Counterfeit Detection - Besides the metal content, there are a lot of other problems with this classic commemorative By Numismatic Guaranty Corporation ......   A classic silver...

NGC Ancients: Classic Greek Coins, Part II

David Vagi continues his discussion of the designs of select ancient Greek coins in the second of a multi-part series By David Vagi - Director, NGC...

Cleaned Copper Coins May Be Challenging to Detect

Posted by David W. Lange, NGC Research Director This month Dave discusses the difficulty of detecting cleaned copper and bronze coins My recent column on the...

A Closer Look at 19th-Century Gold – Three Dollar Gold Opportunities

Take a closer look at the 19th-century gold series - including the Three Dollar Gold By Jim Bisognani for Numismatic Guaranty Corporation (NGC) ......   Is time...

NGC Ancients: Classic Greek Coins, Part I

NGC's David Vagi discusses the design varieties of select ancient Greek coins in this first of a multi-part series By David Vagi - Director, NGC Ancients...

Counterfeit Coin Detection – 1891 Double Eagle US Gold Coin

Counterfeit Coin - 1891 Double Eagle By Max Spiegel –  Numismatic Guaranty Corporation ...... NGC graders identified an 1891-S Double Eagle with a removed mintmark. Because...

Pioneer Gold: Big Potential, Tiny Coins

California Fractional gold coins offer an easier way to connect with the Gold Rush By Jeff Garrett for Numismatic Guaranty Corporation (NGC) ......   When the Odyssey...

NGC Introduces New Raw Coin Imaging Service

These images are perfect for use in the NGC Registry, on the NGC Chat Boards or in online marketplace listings. The raw coin imaging service...

Counterfeit Coin Detection – 1908-S Counterfeit Indian Head Cent

1908-S Counterfeit Indian Head Cent By Max Spiegel – Numismatic Guaranty Corporation .....   The grading room was recently presented with a 1908-S Indian Head Cent for certification. The...