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Combined Organizations of Numismatic Error Collectors of America - http://conecaonline.org/
National numismatic organization devoted to error and variety collectors. |
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Collecting Error Coins - http://studium.com/6/errorcoins.html
Just as nearly every family has its black sheep, virtually every coin series has its failures. These are known as errors or mis-struck coins, and have a following all their own. |
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Mint Error News Magazine - http://minterrornews.com/
Available both as a print magazine and an online PDF magazine with articles, features, and discoveries of major mint errors (striking errors) from the United States and around the world. |
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Silver Dollar VAMs - http://www.robjoyce.com/vams
Detailed information on silver dollars, specifically Morgan and Peace Dollar die varieties known as VAMs. |
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Error Coins Magazine - http://www.etcmmag.com/
Monthly magazine devoted to error coin collecting. Available by subscription. |