I have a Davy Crockett pin with the wron year on it. I bought it at the Disney Store as the CM was taking them off due to a misprint. I have never traded or sold pins and know nothing about it. I have a few pins mostly princesses just because I love Disney stuff.I don't know how to post a pic and I'm not sure if I have enough posts to do so.
Check out www.pinpics.com. The error pin is #378 and the corrected is #379. It is not a rarity as there were many thousands of these made and then they issued a corrected pin later in the year, so the series had two Davy Crockett pins instead of only one.
