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<p>[QUOTE=&quot;GDJMSP, post: 1660530, member: 112&quot;]I don&#039;t see anything on your coin that really looks like PVC residue, that&#039;s why the acetone isn&#039;t doing anything.</p><p><br /></p><p>To me, the yellowish, or light brownish color if you prefer, looks like toning. The black spots, that too is toning but I believe it is toning that was caused by some specks of something that got on the coin at some point in its life. </p><p><br /></p><p>To remove either the black or the yellow color, I think you would have to dip the coin. And if you don&#039;t know what a coin dip is, it&#039;s an acid. If dipped properly, the yellowish color should just go away. The black spots might go away, but they also might leave behind spots that are either darker or lighter than the rest of the coin is after being dipped. In other words, it&#039;s highly possible you would still see where the black spots used to be. Only they wouldn&#039;t be black anymore.</p><p><br /></p><p>All of that said, if you have no experience at dipping coins, then you should not try to dip a coin because it all too easy to ruin the coin and make it worse than it is. So your best course of action is to just leave it alone.</p><p><br /></p><p><br /></p><p>edit - I recommend soaking the coins for 24 hrs because sometimes once PVC residue has dried out it can be kind of tough to get off the coin. Yeah, a half hour might do it, or 2 minutes might, or an hour might - you just don&#039;t know. And since letting the coin soak for 24 hrs isn&#039;t going to hurt anything, and since it will definitely be a long enough time to remove anything that acetone is capable of removing, that&#039;s why when I wrote up the proceedure for folks, I said to let it soak 24 hrs. That way, everything is covered.[/QUOTE]</p><p><br /></p>

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