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<p>[QUOTE=&quot;Oldhoopster, post: 8416445, member: 84179&quot;]If it&#039;s something at the interface between the copper plating and zinc, then I would classify it as a plating defect.&nbsp; If it&#039;s something within the zinc, then it would be a lamination</p><p><br /></p><p>Laminations can still occur in zinc blanks but are a lot less likely.&nbsp; The old copper planchets are an alloy of copper and zinc, so there are opportunities for the alloy to not mix properly.&nbsp; The zinc cent isn&#039;t alloyed with other metals, so that source of laminations is eliminated.&nbsp; There is still a possibility of contamination or temperature issues, but those are less likely.</p><p><br /></p><p>I can&#039;t tell if the OP has a plating defect or lamination[/QUOTE]</p><p><br /></p>

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