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<p>[QUOTE=&quot;RonSanderson, post: 2513837, member: 77413&quot;]So the second coin does not merely have the first coin&#039;s corrosion by-products sticking to it, but is now engaged in corrosion on its own. That explains how the reverse can be so bad and the obverse essentially still clean. </p><p><br /></p><p>I naively expected both sides of any coin to go through the same conditions at the same time and look mostly the same. </p><p><br /></p><p>This demonstrates otherwise.[/QUOTE]</p><p><br /></p>

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