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<p>[QUOTE=&quot;princeofwaldo, post: 1253583, member: 24091&quot;]I&#039;ve never attempted to clean a valuable proof, however, I have had pretty good luck cleaning less expensive proofs.&nbsp; Hold by edges, squirt with Windex (or other amonia based cleaner), swirl solution around surface of coin by tilting, rinse with warm water, rinse with cold water, dry with canned air form an electronics store.&nbsp; On a real nastly looking coin it won&#039;t return it to gem proof, but it will make it look much more presentable.&nbsp; On coins with light to medium fog, it works fabulous.&nbsp; Best part, it does not dull the mirrors the way a commercial dip would.&nbsp; I&#039;ve had coins make into PF68 holders afterward, so its not something the grading services are going to notice.&nbsp; The key is to insure the coin is totally, 100% dry when finished.&nbsp; Any kind of moisture left behind will leave a spot that subsquent cleaning by this method will NOT remove.[/QUOTE]</p><p><br /></p>

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