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<p>[QUOTE=&quot;TheCrownCollector, post: 25389006, member: 160023&quot;]Hi everyone,</p><p><br /></p><p>I have recently come across a gem of the highest rarity but it is currently impaired. The coin is a diamond in the rough that I believe can be transformed into something majestic. As can be seen from the images below, the coin was submitted to PCGS by its previous owner only to to be told the coin needs to be conserved due to the overwhelming presence of PVC - PCGS is indeed correct in their assertion. I purchased the coin realizing that the coin is in fantastic state of preservation and could be vastly improved with a proper acetone bath (something I have done countless times before, with great success). To my great dismay, after a good week in acetone, the PVC residue persists. In my decade of collecting, I have never come across such a case (and I have been through quite a few coins). After the acetone bath, I took a Q-tip and attempted to gently rub away the green to see if it budges... it does. After a few rubs, the Q-tip became quite green and a truly beautiful undertone/skin of the coin could be seen - it&#039;s almost proof-like in appearance. What little I wiped with the Q-tip naturally produced very faint hairlines (given the proof-like reflectivity of the fields) so I stopped and began searching for a better approach.</p><p><br /></p><p>After extensive research and reading, mainly at CT, I have come to conclude that the next logical step to take is to use Xylene or Toluene. Posts by GDJMSP and BadThad have been highly educational and I hope they and others see this post and offer a bit more guidance.</p><p><br /></p><p>My questions are as follows -</p><ol> <li>Given the images below, which do you think is more appropriate for a next step, Xylene or Toluene?</li> <li>Can you please elaborate on the precise procedure (I&#039;m aware of the risk and the requisite safety measures).</li> <li>Any particular set up you recommend? For coins I bathe in acetone, I use small glass mason jars and a pair of steel clamp tongs. This has worked for me quite well.</li> <li>How long should the bath in Xylene/Toluene be? Minutes? Hours? Days? This particular sort of PVC seems very persistent so I&#039;d assume a through prolonged bath is needed initially and then perhaps a secondary/tertiary baths with a final acetone bath?</li> <li>Any other tidbits you recommend based on experience would also be greatly appreciated.</li> </ol><p><b><u>Original State</u></b></p><p>[ATTACH=full]1625823[/ATTACH] [ATTACH=full]1625824[/ATTACH] [ATTACH=full]1625825[/ATTACH] </p><p><u><b><br /></b></u></p><p><u><b>Method &amp; Coin After A Week Long Bath</b></u></p><p>[ATTACH=full]1625826[/ATTACH] </p><p>[ATTACH=full]1625827[/ATTACH] [ATTACH=full]1625828[/ATTACH][/QUOTE]</p><p><br /></p>

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