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<p>[QUOTE=&quot;James Miller, post: 3651684, member: 106185&quot;]I have been sorting my 1982 pennies into 2 piles.&nbsp; I have my copper (3.11Gram) pile and my zinc (2.5Gram) pile.&nbsp; I have gone through hundreds of pennies and they all clearly go into one pile or the other.&nbsp; I recently found one penny that weighs 2.82Grams</p><p><br /></p><p>This is outside of the tolerance for both the zinc and the copper penny...</p><p><br /></p><p>There is no obvious wear to account for a weight loss, nor is there any amount of gunk that could add weight.</p><p>I know in 1982 the mint switched from copper to zinc.</p><p>Could this be some transition in the actual material?[/QUOTE]</p><p><br /></p>

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