Rich Schemmer Error Coins
Specialties: Numismatic Errors, U.S. Patterns/Trials.
Ken Potter
Price Lists on Error Coins, U.S. Defaced Coinage Dies.
Fred Weinberg & Co.
Fine mint error coins, U.S. type, and world coins.
The Error Collection
Buy and sell error coins of all kinds.
Al's Coins
Buy and sell error coins.
Error Trends Coin Magazine
A monthly publication dedicated to serving the error coin hobby.
Byers Numismatic
Buy and sell the worlds finest mint errors.
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