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<p>[QUOTE=&quot;alurid, post: 2777164, member: 81991&quot;]<b>13) Cleaning with Aluminum Foil</b> is a simplest version of the Elctrochemical Reduction cleaning method (see #16 below) for removing tarnish from silver coins.</p><p>NOTE: Do not use this method on silver coins of high value.</p><p>A silver coin is placed into a strip of folded aluminum foil, shiny side inward. The foil and silver coin should be moistened separately with water before placing the coin inside the foil. Once the silver coin is surrounded by the foil, quickly press the foil into the coin&#039;s relief.</p><p><br /></p><p>CAUTION: Do not keep fingers on the aluminum foil for too long. The chemical reaction between the foil, water and oxidized silver may create high temperatures and possibly burn your skin.</p><p><br /></p><p>The chemical reaction will last for several minutes and may produce an odor similar to rotten eggs. After the coin cools down, peel the aluminum foil away from the coin. Black oxide can be easily rinsed off and the coin dried with a soft cloth. Coins with extensive oxidation may not respond completely to this method.</p><p><br /></p><p>Found this on a link for cleaning coins found with a metal detector.</p><p><a href="http://www.metaldetectingworld.com/cleaning_coin_p16_silver.shtml" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.metaldetectingworld.com/cleaning_coin_p16_silver.shtml" rel="nofollow">http://www.metaldetectingworld.com/cleaning_coin_p16_silver.shtml</a>[/QUOTE]</p><p><br /></p>

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