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<p>[QUOTE=&quot;Kentucky, post: 2775143, member: 33176&quot;][USER=24314]@Insider[/USER] ...what other coin forum?&nbsp; To address a few points above, a solution of baking soda (sodium hydrogencarbonate) will neutralize any residual acid hiding in the nooks and crannies of a coin, but these same nooks and crannies should be accessible to the rinse water, so the baking soda rinse is &quot;gilding the lily&quot; but should not be harmful as long as the coin is rinsed with water and distilled water in the end. I&#039;m not really fond of a final acetone rinse since this would tend to cause any dissolved inorganic substances to drop out and perhaps leave a haze on the coin as [USER=24314]@Insider[/USER] mentioned.&nbsp; </p><p><br /></p><p>As far as drying, most any clean cloth should work as long as you don&#039;t rub, especially uncirculated and proof coins.&nbsp; I usually lay the cleaned/wet coin on a clean towel, fold another section over it and press with my hand.&nbsp; Uncover the coin and it should be done.</p><p><br /></p><p>Finally for the reference given, some thoughts...museum conservators are the ones who polished coins in museum displays until they were little more than metal disks, the nonsense about a thiourea bond to a silver surface being impossible to break is pure snake oil, the author promised a future article featuring safer alternative methods to clean silver, but a quick search by me didn&#039;t reveal it.&nbsp; One last point, what were these 98% Mexican silver coins they npracticed their cleaning on?[/QUOTE]</p><p><br /></p>

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