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Antiques and Collectibles
- A service that renders an opinion on a coin's authenticity and grade.
Ancient Coin Certification Service
- David R. Sear provides an authoritative aid to collectors and dealers who are seeking both a valid attribution of their coins and confirmation of authenticity.
Independent Coin Grading Company
- Offering blind submission through a CPA firm to eliminate submission bias.
Numismatic Guaranty Corporation of America
- Submit most US and world coins for grading through an authorized member/dealer.
- Accepts direct submittals from the general public, collectors and dealers.
Professional Coin Grading Service
- Includes prices and descriptions of grading and authentication services.
Robert Matthews Coin Authentication
- Specialises in the scientific examination and authentication of British milled coins.
Sovereign Entities Grading Service, Inc.
- Grading and encapsulating service for U.S. coins, errors, and varieties.
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