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<p>[QUOTE=&quot;Suarez, post: 3585653, member: 99239&quot;]&quot;<i>This is why I always tell people to stop using lemon juice, unless it is a controlled process...</i>&quot;</p><p><br /></p><p>Acids are a bad idea for cleaning ancient coins. Period. It &quot;works&quot; by dissolving both metal and dirt. That it works faster on the dirt doesn&#039;t mean that it&#039;s not doing some harm to the coin itself too. Silver is not very reactive chemically but remember that silver coins are not 100% pure. They contain varying amounts of other elements which do tend to be more susceptible. When acid attacks a coin along with the dirt it also takes away some of those secondary elements leaving behind a more matte appearance or a downright pitted one if the overall silver content is low.</p><p><br /></p><p>You would never find a museum or an auction house using home remedies like lemon juice or vinegar to clean their coins so why would you? The best method remains cleaning under a low-power microscope. This is how <i>they</i> do it.</p><p><br /></p><p>Rasiel[/QUOTE]</p><p><br /></p>

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