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<p>[QUOTE=&quot;-jeffB, post: 4644235, member: 27832&quot;]<b>NO NO NO!</b></p><p><br /></p><p><b>PLEASE</b> don&#039;t soak these coins in acid, even a gentle acid like vinegar. Distilled water is fine, acetone is also fine, but not acid.</p><p><br /></p><p>(Vinegar isn&#039;t a <i>strong</i> acid, and coin silver isn&#039;t as chemically active as cupronickel. But get even a tiny bit of <i>salt</i> in the mix, like from your sweat, and you&#039;ve got a mixture that will corrode almost any coin&#039;s surface.)[/QUOTE]</p><p><br /></p>

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