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<p>[QUOTE=&quot;ursus101, post: 1246478, member: 32665&quot;]What are the situations when you must clean/conserve a coin? In other words, if you do not do smth. to a coin, it gets only worse?</p><p><br /></p><p>P.S. It would be great if specific situations are mentioned.</p><p><br /></p><p>P.P.S. I will summarise here all the situations mentioned in the thread:</p><p>- verdigris [<a href="http://www.cointalk.com/t190394/#post1246490" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t190394/#post1246490">link</a>] (be carefull, the author has dangerous humor)</p><p>- PVC damage [<a href="http://www.cointalk.com/t190394/#post1246584" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t190394/#post1246584">link</a>]</p><p>- ancient coins with centuries of rock hard dirt on them [<a href="http://www.cointalk.com/t190394/#post1246607" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t190394/#post1246607">link1</a>,<a href="http://www.cointalk.com/t190394-2/#post1246815" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t190394-2/#post1246815">link2</a>]</p><p>- bronze disease of ancient bronzes [<a href="http://www.cointalk.com/t190394-2/#post1246616" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t190394-2/#post1246616">link</a>]</p><p>- excessive dirt [<a href="http://www.cointalk.com/t190394-2/#post1246834" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t190394-2/#post1246834">link</a>]</p><p>- such situations do not exist [<a href="http://www.cointalk.com/t190394/#post1246528" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t190394/#post1246528">link</a>][/QUOTE]</p><p><br /></p>

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