I can't explain the glow but it looks very bright aluminum type. Pictures are not able to capture the glow. It weight in at 5.75 grams. But I don't see any copper composition on the rim.
Spence, which plating metal would attract a magnet to a clad coin?
Very doubtful that it is a silver State Quarter planchet, as those were 6.25g. So I agree with others that this coin was plated with something. Given the high reflectiveness, maybe it was chromed?
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