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<p>[QUOTE=&quot;-jeffB, post: 7962544, member: 27832&quot;]&quot;Nickels&quot; are struck from an alloy that&#039;s 75% copper, 25% nickel.</p><p><br /></p><p>When they get corroded due to environmental exposure, the nickel gets eaten away faster than the copper, and you can end up with a brown coin like yours. It may weigh noticeably less than a normal nickel, but not enough less to match the 3.1g weight of a copper cent planchet.[/QUOTE]</p><p><br /></p>

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