Web Directory

» Baker Numismatics
   Photographic image library of coins with doubled dies, repunched mintmarks, over mintmarks, and repunched dates.
   http://www.bakercoins.net/learn/images/

» Collecting Error Coins
   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.
   http://studium.com/6/errorcoins.html

» Combined Organizations of Numismatic Error Collectors of America
   National numismatic organization devoted to error and variety collectors.
   http://conecaonline.org/

» Error Coins Magazine
   Monthly magazine devoted to error coin collecting. Available by subscription.
   http://www.etcmmag.com/

» Mint Error News Magazine
   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.
   http://minterrornews.com/

» Rotated Die Coin Census
   Census for US coins with major die rotation of 90 degrees to 180 degrees. Includes fake error detection and measurement indices.
   http://www.rotateddies.com/

» Washington Dollar Errors
   Information regarding errors on the 2007 George Washington dollar coin.
   http://www.washingtondollarerrors.com