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<p>[QUOTE=&quot;kanga, post: 355788, member: 9270&quot;]NCS &quot;conserves&quot; coins (their terminology.)</p><p>That means they remove <u>stuff</u> from coin surfaces that has nothing to do with the coin&#039;s metal.</p><p>That means dirt, grease, PVC byproducts, etc.</p><p>That does <u>NOT</u> mean any of the coin&#039;s metal, whether original or a metal byproduct of exposure to the environment (toning, etc.)</p><p>Nor do they &quot;fix&quot; problems with the coin (scratches, holes, etc.)</p><p>&nbsp;</p><p>I&#039;m going to see what they can do.</p><p>I&#039;ve got a gold coin with PVC residue on it that I&#039;m going to send to them.</p><p>PVC won&#039;t attack gold, but as someone in here pointed out (<b>GDJMSP</b> I think), there is enough copper alloyed into the coin that the PVC <u>can</u> work on that the coin could end up pitted.</p><p>&nbsp;</p><p>It&#039;ll take a while to go through the whole process, so maybe in 2 months I&#039;ll be able to report back to you.[/QUOTE]</p><p><br /></p>

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