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<p>[QUOTE=&quot;AngelKitty, post: 1442900, member: 37889&quot;]Haha, have fun. XD</p><p><br /></p><p>So I tried a new thing. I&#039;ve been trying to avoid chipping it off out of fear of scratching the coin, but I gave in and tried it today. </p><p><br /></p><p>[ATTACH]177862.vB[/ATTACH][ATTACH]177861.vB[/ATTACH]</p><p><br /></p><p>As you can see I got most of the thickest gunk off. The first image is the picture I posted earlier; the second is a picture I took today, after chipping it off with a beading needle (which is pretty soft). A lot of it came off quite easily, and was powdery, but as you can see there&#039;s still a lot that isn&#039;t coming off (or that I don&#039;t dare scrape off for fear of scratching the copper). Since it was powdery, and didn&#039;t really &#039;chip&quot; off, I&#039;m really thinking this is corrosion and that the glue has been removed. I mean, what kind of glue can resist boiling, peroxide, acetone <i>and </i>xylene? o_o</p><p><br /></p><p>Since it&#039;s from glue, I have no idea what compound this corrosion is. I&#039;m a biologist and a numismatist, not a chemist. Could superglue react with copper to form copper cyanide or some other copper compound? </p><p><br /></p><p>And, since you guys haven&#039;t seen the obverse, here&#039;s a picture.</p><p><br /></p><p>[ATTACH]177865.vB[/ATTACH][/QUOTE]</p><p><br /></p>

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