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<p>[QUOTE=&quot;SuperDave, post: 2358531, member: 1892&quot;]Crack it and get it into acetone if you&#039;re not majorly out-of-pocket on it. If you do, <b>seal</b> it into the acetone bath, leave it in a chill area away from the sun so the acetone doesn&#039;t evaporate or heat up, and don&#039;t revisit it for 48 hours. Then swish the snot out of it in about a pint of fresh acetone (held with tongs), and seal it into another soak. Lather, rinse, repeat until it goes away. If it ever does.</p><p><br /></p><p>Proofs cannot be touched with anything physical (except to hold them by the rims) during conservation. I only touch Proofs with rose thorns under magnification and even then only when the touch never comtacts the coin (when the buildup has z-axis projection from the surface). And then only when I can leverage gravity to make what I touch fall away instead of moving on the surface.</p><p><br /></p><p>While submerged.</p><p><br /></p><p>Conservation can be....complex if you want to do it right. It&#039;s material-intensive - I&#039;ve thrown whole quarts of acetone at a single coin - and exacting (you better have the hands of a machinist).[/QUOTE]</p><p><br /></p>

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