American Numismatic Association

The American Numismatic Association is a nonprofit educational organization dedicated to educating and encouraging people to study and collect money and related items. With nearly 33,000 members, the Association serves the academic community, collectors and the general public with an interest in numismatics.

www.money.org

Coin Grading Services

Numismatic Guarantee Corporation of America (NGC), the official grading service of the American Numismatic Association (ANA) and the Professional Numismatic Guild (PNG): www.ngccoin.com

NGC world coin population report:

https://www.ngccoin.com/census/

Professional Coin Grading Service (PCGS), largest coin grading company in the world with outstanding grading standards: www.pcgs.com

PCGS world coin population report:

http://www.pcgs.com/pop/WorldCoins.aspx?c=1660

ANACS, America's Oldest Grading Service: www.anacs.com