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<p>[QUOTE=&quot;BR549, post: 888377, member: 7110&quot;]Hmmmm...looks like post mint damage (meaning not released from the mint in that condition) most likely some acidic solution because the surface appears to be pitted.</p><p><br /></p><p>One would think if you dipped this coin into a copper sulfate solution, the surfaces would bond with the copper in the solution and impart a very thin plating. The lettering and devices seem to be too well defined for the outer layer of cupro-nickel to be dissolved, but it&#039;s possible. Remember, as long as the metal remains the same, the acidity of the solution is constant through out, the high and low spots on the coin will be removed at the same consistency and will maintain the same thickness. </p><p><br /></p><p>Someone was experimenting here, hope you get a better answer.</p><p><br /></p><p>Happy collecting[/QUOTE]</p><p><br /></p>

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