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<p>[QUOTE=&quot;Maxfli, post: 3442801, member: 69089&quot;]Here are a couple to start.</p><p><br /></p><p>There is no set amount of time for the acetone soak.&nbsp; Every coin is different. As Eduard suggested, start for 15-20 minutes and see what happens.</p><p><br /></p><p>I would expect the tape residue to come off rather quickly (famous last words).&nbsp; Some of the organic gunk, particularly that which is trapped in the letters, will probably need multiple treatments.</p><p><br /></p><p>Start with fresh acetone each time.</p><p><br /></p><p>Sometimes the gunk will float away from the coin. Or, it may just get loosened but remain in place (again, particularly in the lettering) and need a gentle nudge, like with a softened wood toothpick. If so, a hands-free magnifier is handy to help make sure you&#039;re nudging the gunk and making minimal contact with the coin itself.[/QUOTE]</p><p><br /></p>

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