ok, i got to check this coin out again today. it is a 1993 penny not a 1996. it is absolutely flat on the ''tails'' side, w/o copper on that side as well. no rim or anything on that 1 side. on the blank side, it ressembles the little plug that an electrician knocks out of an electrical box to run the wires through. it has no machine marks on it ... More @Wikipedia
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