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<p>[QUOTE="NSP, post: 3258038, member: 74849"]Thank you for the clarification. It is very uncommon for dies to be used and then overdated. After a die is engraved, it is heat treated to harden it before it’s used to strike coins. To overdate a used die, I believe it would have to be heat treated to unharden it, overdated, and then heat treated to harden it again. Two examples of overdates where a used die was overdated are the 1806/5 quarter and the 1827/3/2 quarter. I don’t know if there are others.[/QUOTE]</p><p><br /></p>
[QUOTE="NSP, post: 3258038, member: 74849"]Thank you for the clarification. It is very uncommon for dies to be used and then overdated. After a die is engraved, it is heat treated to harden it before it’s used to strike coins. To overdate a used die, I believe it would have to be heat treated to unharden it, overdated, and then heat treated to harden it again. Two examples of overdates where a used die was overdated are the 1806/5 quarter and the 1827/3/2 quarter. I don’t know if there are others.[/QUOTE]
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