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<p>[QUOTE=&quot;desertgem, post: 1852073, member: 15199&quot;]Information can be shared without backing it up, but it usually will be ill received. You may be talking about the use of copper sulfate solutions, but Verdi-care and previous Verdigone are not in the same chemical basis. I had doubts years ago also when Thad was working on his first product and tested it many times, you can find the threads on the site, and found it worked, and the coins would be graded by TPG with no indication of use.&nbsp; He is an industry chemist and has the background. You may &quot;poush&quot; it , but for non-ancient coins , the product can work miracles and I have never seen a real case of any damage from it&#039;s use.&nbsp;&nbsp; If the info is valid, you are welcome to post it, but there may be discussions on its value. </p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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