Photograde: Official Photographic Grading Guide for United States Coins, 19th Edition by James F. Ruddy |
The Official Red Book: A Guide Book of United States Coins 2009 by R. S. Yeoman |
The Official Guide to Coin Grading and Counterfeit Detection, Edition #2 by ProfessionalCoingradi |
The Expert's Guide to Collecting & Investing in Rare Coins: Secrets Of Success by Q. David Bowers |
by Ron Guth
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