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<p>[QUOTE=&quot;Razz, post: 8168554, member: 100526&quot;]I wonder if anyone has studied what role, if any, the zinc planchets contribute to the plating blisters? I recent acquired this Zinc (unplated) 1 Ore coin dated 1961. The obverse near the date shows a roughness that might make plating problematic if additional marks occur on the planchet before plating.</p><p><br /></p><p>In the case of the US Cent, doesn&#039;t the zinc planchet get made, then plated, then run through the press? So not all the pimples might be air bubbles or maybe the plating doesn&#039;t work as well on the pimply surface and doesn&#039;t get struck out completely allowing for air pockets?[ATTACH=full]1426613[/ATTACH] [ATTACH=full]1426614[/ATTACH] [ATTACH=full]1426615[/ATTACH] [ATTACH=full]1426616[/ATTACH][/QUOTE]</p><p><br /></p>

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