Antiques and Collectibles » Coins

Shopping, Antiques and Collectibles, Coins, Grading Services - Robert Matthews Coin Authentication. Specialises in the scientific examination and authentication of British milled coins.

http://coinauthentication.co.uk/

Numismatic Guaranty Corporation of America

NGC is the world leader in third-party coin grading services.

https://www.ngccoin.com/

ANACS Home Page

Shopping, Antiques and Collectibles, Coins, Grading Services - ANACS. A service that renders an opinion on a coin's authenticity and grade.

https://www.anacs.com/