Two different errors on the Wisconsin quarter dollar is causing coins containing one of the errors to be valued up to $1,100, with the possibility of prices going up. Coin World reports that only coins struck at the Denver Mint are affected. State quarters have a mint mark on the “head” side of either “P” for Philadelphia Mint or “D” for Denver Mint.
Check your quarters again the images from Coin World to tell if you have one of the rare vareties.
Updated July 14, 2010 and originally published February 10, 2005. If you enjoyed this article, subscribe to the RSS feed or receive daily emails. Follow @flexo on Twitter and visit our Facebook page for more updates.