The Error Coin Information Exchange (ECIE) is a freewheeling forum dedicated to the study of error coins and varieties. Founded and hosted by veteran writer and researcher Mike Diamond, it is a great place to visit, whether you're an established collector or a novice. ECIE is not flashy and doesn’t waste your time with a message board clogged with idle chit-chat. It simply provides the best information on error coins available on the web. Here you can read about late-breaking developments; find out about the newest discoveries; listen or participate in spirited debates about how error coins are produced; test your skills with periodic quizzes and brain-teasers. ECIE proudly maintains an atmosphere of skeptical inquiry. Here, no claim goes unchallenged and no theory goes untested. This is the best place to find out what kind of error you really have, how it was created, and the extent to which it is rare or unusual.

Policy Statement: By design, ECIE does not attempt to develop partnerships with dealers, grading services, or auction houses. It neither seeks, nor encourages, discounts, promotions, giveaways, or advertisements. To do otherwise would create a conflict of interest that could compromise the fierce independence and impartiality that distinguishes ECIE from all other on-line error coin clubs.