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<p>[QUOTE=&quot;lordmarcovan, post: 2775424, member: 10461&quot;]I will defer to this advice as probably being superior to my own previous advice.&nbsp; Disregard my earlier comments.&nbsp; Considering the (remote) possibility that a &#039;16 DDO or something like that might be hiding beneath that crust, I think [USER=85318]@Ordinary Fool[/USER] has a good point.</p><p><br /></p><p>However, what the heck is xylene, and where does one get it?&nbsp; Ultrasonic machines I&#039;m familiar with- we had one in the jewelry store where I once worked, and I suppose [USER=87881]@JonathanH[/USER] could take the coin to a place that cleans or repairs jewelry if he lacks an ultrasonic cleaner.</p><p><br /></p><p>[USER=85318]@Ordinary Fool[/USER] is obviously no ordinary fool.</p><p><br /></p><p><a href="http://www.homedepot.com/p/Klean-Strip-1-gal-Xylol-Xylene-GXY24/100406366" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.homedepot.com/p/Klean-Strip-1-gal-Xylol-Xylene-GXY24/100406366" rel="nofollow">Edit- OK, I see Home Depot among others sells Xylene.</a>&nbsp; An industrial solvent, then, I gather.</p><p><br /></p><p><a href="https://en.wikipedia.org/wiki/Xylene" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Xylene" rel="nofollow">Wikipedia has a page on it</a>, of course, but I found that rather intimidating.&nbsp; (I flunked chemistry in high school.&nbsp; Guess it shows, huh?) <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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