ANA GRADING GUIDE The Official American Numismatics Association's Grading Guide.
Price....$ 15.96
Guide to Grading and Counterfeit Detection This is The PCGS Grading book. Has a large chapter on counterfeit detection.
Price....$ 15.96
OFFICIAL PRICE GUIDE TO MINT ERRORS Alan Herbert describes all kinds of Mint Errors, including split dies, cracked planchets and double strikes. Many errors are photographed for easy identification.