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<p>[QUOTE=&quot;Clawcoins, post: 3802537, member: 77814&quot;]This is a zincoln (zinc lincoln).&nbsp; A Zinc core with an 8 micron thin copper plate.</p><p><br /></p><p>The two metals do not go well together.</p><p><br /></p><p>The copper plating can bubble up, create streaks, etc.&nbsp; It can also sink down.&nbsp; And that is Before it enters circulation and gets damaged and causes further deterioration of everything.</p><p><br /></p><p>For some reason when there is internal corrosion and the damage becomes incused (sinks down), it ends up in partial circles that people think are random mint marks.&nbsp; It&#039;s not.&nbsp; It&#039;s a &quot;zincoln&quot;</p><p><br /></p><p>The best examples are watching the life cycle of split plating around the mint mark.&nbsp; It looks like a DD but starts changing colors, sinks a bit, bubbles up, then collapses down.[/QUOTE]</p><p><br /></p>

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