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<p>[QUOTE=&quot;BadThad, post: 679959, member: 17261&quot;]Hello</p><p>&nbsp;</p><p>I always like to recommend starting any conservation project using distilled water. With verdigris or PVC damage you want to first solubilize the residual acids on the surface. PVC damage contains hydrochloric acid and verdigris contains both hydrochloric and sulfuric acid. Those acids are most soluble in water.</p><p>&nbsp;</p><p>After a good, long soak in water (and perhaps changing it out a couple of times)..... move to acetone. It will remove a lot of polar and non-polar organic contaminants. </p><p>&nbsp;</p><p>Your scanner doesn&#039;t produce good enough images for me to get a decent look at the verdigris. From what I can tell, a lot of it is light. With a coin of this value, you want to be extra careful in your conservation efforts. Going beyond water and acetone is a serious commitment, especially if you&#039;re inexperienced at coin conservation. Not sure how much you paid for the coin, but you might consider leaving this one to the pros like NCS. You certainly don&#039;t want to damage the coin any worse than it is already.</p><p>&nbsp;</p><p>If you decide to move forward, I suggest you practice on non-valuable coins first. Remember, there&#039;s a big difference between conservation and cleaning. Once you cross that line there&#039;s no returning.[/QUOTE]</p><p><br /></p>

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