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How do UNC coins survive 300+ years
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<p>[QUOTE="GDJMSP, post: 1312763, member: 112"]Not really. The wood will also put off gasses that cause the copper to tone - no longer be red.</p><p> </p><p><br /></p><p><br /></p><p>Yep there are. But how do you know that copper coin hasn't been dipped in all of those years ? You don't.</p><p><br /></p><p>Is it impossible for a coin, copper or other, to stay untoned for many years ? No, it's not impossible. But the odds of it happening are like billions to one against.</p><p><br /></p><p>All coins begin to tone the instant they leave the dies. And only in recent years, from a historical perspective, has anyone even cared to try and stop them from toning. And even today, we do not have a practical means of doing so. The best we can do is to slow it down.</p><p><br /></p><p>Copper is the most reactive metal there is of all our coinage metals. Even today the TPGs know for a fact that you cannot stop red copper from toning. Even if you use the very best modern storage methods.</p><p><br /></p><p>You can draw your own conclusions from that.[/QUOTE]</p><p><br /></p>
[QUOTE="GDJMSP, post: 1312763, member: 112"]Not really. The wood will also put off gasses that cause the copper to tone - no longer be red. Yep there are. But how do you know that copper coin hasn't been dipped in all of those years ? You don't. Is it impossible for a coin, copper or other, to stay untoned for many years ? No, it's not impossible. But the odds of it happening are like billions to one against. All coins begin to tone the instant they leave the dies. And only in recent years, from a historical perspective, has anyone even cared to try and stop them from toning. And even today, we do not have a practical means of doing so. The best we can do is to slow it down. Copper is the most reactive metal there is of all our coinage metals. Even today the TPGs know for a fact that you cannot stop red copper from toning. Even if you use the very best modern storage methods. You can draw your own conclusions from that.[/QUOTE]
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