This is a cool looking coin, I am not sure its all that collectible. If it was BU, maybe. Any thoughts? I can't see how it was chemically altered and appears to have been minted this way. Note on the obverse, the bleed through above the "G" in "In God We Trust" and also at the ends of Jefferson's hair near the collar. My camera stinks and its much easier to see with magnification. I think you can see it in the pictures here.
A mild case of improper annealing. Copper never "bleeds through" overlying metal. Light will not pass through even the thinnest metal layer. The atoms are packed too tightly.
Thanks for the information. I knew it wasn't a lamination issue, but I don't have much knowledge about the process or interactions of materials. Do you think it is a collectible coin?
Improper annealing, which is the softening of the planchet before striking, is not considered a mint error. Just a minor defect, like a scratch or a small dent.
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