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<p>[QUOTE="lkeigwin, post: 1173749, member: 30400"]It is not impossible at all. Adequate rinsing works just fine. A quick acetone dip might help if you have trouble with soap residue.</p><p><br /></p><p>But again, what is it you're trying to remove from the coin? Virtually all the advice here is not to clean at all. Very sound. But let's not pretend that cleaning cannot be done safely too, by those who know what they're doing. Look at NGC's NCS. PCGS conserves coins all the time. They've done so for me many times.</p><p><br /></p><p>So here are some ways coins are cleaned:</p><p>Organic material is often treated with acetone. PVC residue, paint, e.g. It will not harm genuine toning. Some collectors dip every coin they get in acetone (and rinse with distilled water) before they store them.</p><p><br /></p><p>Many collectors use long soaks in mineral oil (or other oils) for loosening up stubborn gunk. Some gently work on crud with rose thorns or toothpicks.</p><p><br /></p><p>Early copper collectors sometimes use xylene (commercial brand is Xylol, a cleaner like acetone) to remove very old contaminants.</p><p><br /></p><p>Many dealers dip tarnish and spots off with Ezest.</p><p><br /></p><p>There are gentle coin cleaners/preservatives on the market like CoinCare.</p><p><br /></p><p>Verdigris can be treated with Verdigone or Verdicare.</p><p><br /></p><p>The list goes on. MS70, Blue Ribbon.</p><p><br /></p><p>Will you screw up the cleaning job and damage the coin? Possibly, maybe probably. So it's best to do nothing and take the matter to a professional if you have to. Or experiment on coins of little value.</p><p>Lance.[/QUOTE]</p><p><br /></p>
[QUOTE="lkeigwin, post: 1173749, member: 30400"]It is not impossible at all. Adequate rinsing works just fine. A quick acetone dip might help if you have trouble with soap residue. But again, what is it you're trying to remove from the coin? Virtually all the advice here is not to clean at all. Very sound. But let's not pretend that cleaning cannot be done safely too, by those who know what they're doing. Look at NGC's NCS. PCGS conserves coins all the time. They've done so for me many times. So here are some ways coins are cleaned: Organic material is often treated with acetone. PVC residue, paint, e.g. It will not harm genuine toning. Some collectors dip every coin they get in acetone (and rinse with distilled water) before they store them. Many collectors use long soaks in mineral oil (or other oils) for loosening up stubborn gunk. Some gently work on crud with rose thorns or toothpicks. Early copper collectors sometimes use xylene (commercial brand is Xylol, a cleaner like acetone) to remove very old contaminants. Many dealers dip tarnish and spots off with Ezest. There are gentle coin cleaners/preservatives on the market like CoinCare. Verdigris can be treated with Verdigone or Verdicare. The list goes on. MS70, Blue Ribbon. Will you screw up the cleaning job and damage the coin? Possibly, maybe probably. So it's best to do nothing and take the matter to a professional if you have to. Or experiment on coins of little value. Lance.[/QUOTE]
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