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<p>[QUOTE=&quot;desertgem, post: 680226, member: 15199&quot;]Thanks Tom, I am certainly not against experimentation and documentation. My biggest problem concerning this experiment is that I have no way of knowing what the substance actually was. I assumed acrylic after talking to a chemist here who worked in the plastics industry, but the DMSO did remove some of it. Boss, I didn&#039;t go farther with the DMSO, because I felt I would have needed to use q-tips or something and physically rub off the remaining, and I didn&#039;t want to add any more hairlines or damage the surface on your coin. The sheen part would have been where I probably would have started that. Boss, this is where I would let the coin sit for at least several months and see what happens. Wouldn&#039;t hurt to rinse occasionally in alcohol and then acetone, and let dry to see if any more is coming off. If you want to return them after the first of the year, I would look at them again and photograph to record.As far as the sunlight, as long as the window glass in not low UV glass, it should work.</p><p><br /></p><p>For the photos, I take close ups with my canon A-570IS through the eyepiece of my old surplus B &amp; L stereozoom microscope 7X-30X.&nbsp; The camera is funny as it recognizes the &quot;faces&quot; on coins and focuses on them, except it does have trouble with the coins with indian head dresses <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p>To All, this is not a DIY article. There is no certainty that your lacquer is the same kind. Try alcohol or acetone first. Practice on sacrificial coins. Only use pure grade DMSO. Do not use any physical action without understanding the risk. </p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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