Numismatic Guaranty Company

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

Learn More About NGC

Numismatic Guaranty Company (NGC) has released a video that highlights the benefits of NGC certification and other ways NGC has helped the numismatic hobby.

NGC is 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 45 million coins certified since it was founded in 1987

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Numismatic Guaranty Company (NGC)

Counterfeit Coin Detection – 1920 Pilgrim Tercentenary Commemorative

Counterfeit coin - 1920 Pilgrim Tercentenary Half Dollar The relatively crude forgery shows extensive loss of detail throughout. By Numismatic Guaranty Corporation ...... In recent years, the...
Jeff Garrett: A Guide to Coin Strike Character Rarities

Jeff Garrett: A Guide to Coin Strike Character Rarities

Certain US coins with specific designations can fetch a premium price among collectors   By Jeff Garrett for Numismatic Guaranty Corporation (NGC) ......   When I started collecting...
Edward VIII Pattern Leads Group of NGC-Certified Rare Coins in MDC Monaco Sale

Edward VIII Pattern Leads Group of NGC-Certified Rare Coins in MDC...

A King Edward VIII gold pattern that was certified by Numismatic Guaranty Company (NGC) and set a record earlier this year for most expensive...

Counterfeit Coin Detection – Key Date Counterfeit Carson City 1870 Quarter

Counterfeit Carson City 1870 Quarter   By Max Spiegel, Numismatic Researcher  - Numismatic Guaranty Corporation (NGC) ......   The 1870-CC is the key to the Seated Liberty quarter...
Queen Elizabeth I Rarity Realizes Record-Breaking $650,000 in Spink Sale

Queen Elizabeth I Rarity Realizes Record-Breaking $650,000 in Spink Sale

A Queen Elizabeth I rarity that was certified by Numismatic Guaranty Company (NGC) stunned the coin collecting world when it sold for £480,000 (about...
Coin Grading Service Special Labels in the Postmodern Era

Coin Grading Service Special Labels in the Postmodern Era

By David Schwager for CoinWeek .....   Buy the coin, not the slab. This is wise guidance, and a prudent collector needs to do more than read...
Counterfeit Coin Detection: 1921-D Walking Liberty Half Dollar

Counterfeit Coin Detection: 1921-D Walking Liberty Half Dollar

Counterfeit 1921-D Half Dollar   By Max Spiegel –  Numismatic Guaranty Corporation (NGC) ......   The numerous abrasions were copied from a genuine specimen and will appear on...

Jeff Garrett: Selling Coins by Private Treaty

Not all coins need to be sold through an auction house; a private sale can be fruitful   By Jeff Garrett for Numismatic Guaranty Corporation (NGC)...
Numismatic Guaranty Corporation Is Now Numismatic Guaranty Company

Numismatic Guaranty Corporation Is Now Numismatic Guaranty Company

The updated name will start to appear on NGC's website, marketing, holders, and labels in the coming months The name of Numismatic Guaranty Corporation® (NGC®)...
Rediscovered English Gold Coins From Horace Hird Collection Certified by NGC

Rediscovered English Gold Coins From Horace Hird Collection Certified by NGC

A trio of captivating gold pieces from three prominent monarchs top the list of 52 English gold coins certified by Numismatic Guaranty Company (NGC)...

Counterfeit Coin Detection: United States 1892 Half Eagle Gold Coin

Counterfeit Gold Coin -  1892 Half Eagle   By Max Spiegel - Numismatic Guaranty Corporation (NGC) ......   Many counterfeit gold coins originated in the 1960s and '70s in...
Jim Bisognani: Absence Made the Market Grow Fonder

Jim Bisognani: Absence Made the Market Grow Fonder

The US Mint shipping delay has driven collectors to pay outstanding prices for the modern Morgan and Peace Dollars   By Jim Bisognani – NGC Weekly...
Jeff Garrett: Tips for Selling Coins at Auction

Jeff Garrett: Tips for Selling Coins at Auction

By Jeff Garrett for Numismatic Guaranty Corporation (NGC) ......   During last month’s ANA sales, Heritage and Stack’s Bowers auctioned about $100 million worth of numismatic...
Counterfeit Coin Detection - 1882 $3 US Gold Coin

Counterfeit Coin Detection – 1882 $3 US Gold Coin

Counterfeit 1882 $3 US Gold By Max Spiegel - Numismatic Researcher, NGC ......   On the "Omega" $3 US Gold coins, the counterfeiter’s signature can be seen...
Jim Bisognani: In Memoriam - A Truly One-of-a-Kind Friend

Jim Bisognani: In Memoriam – A Truly One-of-a-Kind Friend

Keith Zaner was a passionate numismatic collector and former NGC Price Guide analyst who will be greatly missed   By Jim Bisognani – NGC Weekly Market...