I have this 1946 coin that looks as though it has 2 S's over a D/D. I have several microscopic views of this coin and am trying to find out how to place them here for your viewing and sugestions. Thank you I edited and placed 2 here, but the others are 900kb. I'll try and resubmit them later.
Very interesting pics. I agree with Treashunt, there's something going on there. Unfortunately I don't have any idea outside of die error. Cool find though.