I have an interesting 1990 quarter with what seems to be a bubble in it under Washingtons chin. It is otherwise normal on the backside. i tried to upload a few pics but the filesize was too big, and i tried to compress it but it still wasent small enough, anyways.... anyone have any idea about this??
aaron: First, welcome. Second: most likely not. These 'bubbles' can be created thru heating the coin.
in the first reply the moderator said something about the cladding process. If that was the reason, would it be valuable??
