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<p>[QUOTE=&quot;GDJMSP, post: 2394285, member: 112&quot;]With coins of lesser quality and significance I&#039;d do it myself with a product caller Verdi-Care. But with that coin, no. I&#039;d use a professional service, this one - <a href="http://www.ncscoin.com" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.ncscoin.com" rel="nofollow">http://www.ncscoin.com</a></p><p><br /></p><p>Of course what&#039;s already done is done, and there is nothing that can be done about that - other than removing what is present (which is what NCS would do). But you can do something about preventing additional corrosion.</p><p><br /></p><p>Going forward, proper storage is key. Verdigris requires moisture in order to remain active. That moisture can come from several different sources, incidental contact, condensation, and humidity. Humidity of course is the hardest to deal with because it&#039;s in the very air we breathe, but it can be managed. And when properly managed even with a coin that already has verdigris on it, the verdigris will become inactive - the corrosion will stop, it won&#039;t grow anymore or increase. </p><p><br /></p><p><br /></p><p><br /></p><p><br /></p><p>Yes, really. While verdigris is most commonly seen on copper coins it is not at all unheard of to find it on silver coins, and even gold coins at times.[/QUOTE]</p><p><br /></p>

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