Thorny Errors on Arizona State Quarter. Check your Arizona quarters for collectible errors.
Easily visible die chips were found on recently released Arizona state quarters. Error coin specialists consider die chips a minor form of die stage; however, they are still collectible but rarely have significant value. The most significant error so far is a curved metal protrusion extending onto the 2008 date on the coin’s reverse. Another die chip has been found to the right of this which obliterated the designer’s initials, at the foot of the saguaro cactus.