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<p>[QUOTE=&quot;Oldhoopster, post: 7982472, member: 84179&quot;]NO!</p><p><br /></p><p>The outer layers of the clad strip is composed of an alloy of 75Cu25Ni (75% copper 25% nickel). When exposed to various environmental conditions, the Ni can leach from the alloy and/or copper can enrich the surface layers.&nbsp; What you&#039;re seeing is the mottled, discolored copper component, not a defective planchet. </p><p><br /></p><p>BTW: it&#039;s not an annealing issue either.&nbsp; The alloy won&#039;t yield such coloration in a reducing atmosphere of the furnace.[/QUOTE]</p><p><br /></p>

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