Error Coin Questions?
Do you have a coin that looks like it might be an error and you don't know how it could have happened?
For a robust discussion of your error coins and to learn more, I recommend posting well-focused pictures of your error coins on the following online forum dedicated exclusively to discussing mint errors: http://groups.yahoo.com/group/errorcoininformationexchange/?soc_src=mail&soc_trk=ma
A Facebook group that is good for answering questions regarding all kinds of coins, including errors and varieties, is: Coin Help Coin Grading, Coin Values, Mint Errors, Sharing
Another Facebook group on which you can post photos and engage in discussion about error coins is: Joe Cronin's "Mint Errors Explained"
Another similar Facebook group is: https://www.facebook.com/ groups/varietyerrorcoins/ permalink/1787528944601410/
Be sure to post specific questions and state what you think the error is.
Please do not send questions to email@example.com. I want to encourage the use of the discussion boards, where numerous people can enjoy and take part.
Here is a glossary of mint errors that shows many types and gives detailed descriptions of how they occur: http://jimscoins.com/ error_coin_examples.php
Here is a link that explains the difference between valuable die errors such as doubled dies, and other forms of doubling that are common and not valuable such as "machine doubling" or "strike doubling":http://jimscoins. com/downloads/Strike% 20Doubling%20Flyer.pdf
Here is a link that gives examples of just about every type of mint error and also explains some types of damage that may cause a coin to look as if it was a mint error: http://www.error-ref. com
I also recommend buying the book "Strike It Rich With Pocket Change" by Ken Potter. That is a great reference on how to find valuable error and variety coins and distinguish them from more common errors and damage. World's Greatest Mint Errors by Mike Byers and 100 Greatest Errors are also interesting books about errors and the minting process.
I also recommend joining CONECA, the national error coin club: http://www.conecaonline. org/ There are national events at coin shows and members also receive an every-other month magazine exclusively about mint errors via snail mail. Here is membership application: Join or Renew | CONECA
(be sure to mention Jim Essence recommended you.) You do not need to be a member to peruse the website.
Here is great free online magazine dedicated to mint errors: https://www. minterrornews.com
From these groups you will learn a lot and meet other error enthusiasts.
Best wishes and have fun!