Research Tools from NGC®

The ANA's Official Grading Service—Numismatic Guaranty Company (NGC)—provides a variety of useful research tools to help collectors be more informed. From price variations to the most comprehensive reference for U.S. coins, you will find a wealth of information in the sections below.

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mercury dimes

Complete Catalog of U.S. Coins

Known as the NGC Coin Explorer, this catalog is the most comprehensive reference for United States coins. Included are images and specifications for every U.S. coin, including mintage figures and current melt values for all gold, silver and platinum coins. Detailed descriptions with insightful analysis are available for almost every coin. NGC-certified populations are also displayed in simple chart and graph formats. 

man examining coin with loupe

Counterfeit Detection Resources

To help collectors and dealers identify counterfeits, NGC has prepared lists of the most commonly counterfeited coins with diagnostic information and images from NGC’s extensive database, as well as commentary from the NGC grading team.

collectible coins on a desk

NGC Census

Known as the NGC online census, this price valuation guide is updated weekly and provides population data for U.S. and World coins certified by NGC. Clicking on the desired category will open that particular selection, and further options for obtaining more detailed information will appear.

variety of coins

NGC  Price Guide

The NGC U.S. Coin Price Guide is a comprehensive online resource for U.S. coin values and more.

assortment of coins

Auction Central

NGC Auction Central lists past and future auctions of NGC-certified United States coins. You can easily navigate sales from some of the world's largest numismatic auction houses.  This powerful search tool helps you research prices realized, and find upcoming auctions of your favorite coins.

Pile of gold and silver coins

Verify NGC Certification

This tool will allow you to enter the certification number of an NGC coin and look up the details of that coin in the NGC database.

someone holding a coin with a notebook

Coin Grading Guide: From 1 to 70

NGC Research Director David W. Lange, looks at the entire series of U.S. coins, on a type-by-type basis, providing tips on how each coin type is graded and qualities to seek in selecting optimum examples.

Multiple app screens


Free and easy to use, the NGC App combines the best research suite into one mobile app. Scan the barcode on any NGC® coin label with your iPhone® or Android™ device, and verify NGC certification.

Pile of pennies, dimes, and quarters


NGC created this alphabetical glossary of common numismatic terms that you may encounter on the NGC certification label and elsewhere on the website.

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