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<p>[QUOTE=&quot;Michael K, post: 2881482, member: 78298&quot;]Nickels are 75% copper. If you dug it up, it&#039;s just environmental damage.</p><p>There aren&#039;t really copper nickels as the copper and nickel are alloyed (mixed together)&nbsp; &quot;cupronickel&quot; before they make the nickels. They aren&#039;t layered.</p><p><br /></p><p>Post #7 in this thread explains this and shows a very nice photo of an improperly annealed nickel. That would be an error and a keeper.</p><p><br /></p><p>You could have a nickel on a copper cent planchet but that would be the size and weight (3.1g) of a penny and a nickel weighs 5 grams.[/QUOTE]</p><p><br /></p>

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