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Will red copper eventually be brown ?
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<p>[QUOTE="gxseries, post: 139201, member: 4373"]Copper preservation is pretty difficult isn't it?</p><p><br /></p><p>This is the best oldest copper coin that I have at the moment:</p><p><img src="http://www.omnicoin.com/coins/901736.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>Near 220 years copper coin still showing signs of redness <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>
[QUOTE="gxseries, post: 139201, member: 4373"]Copper preservation is pretty difficult isn't it? This is the best oldest copper coin that I have at the moment: [img]http://www.omnicoin.com/coins/901736.jpg[/img] Near 220 years copper coin still showing signs of redness :)[/QUOTE]
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Will red copper eventually be brown ?
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