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<p>[QUOTE=&quot;lordmarcovan, post: 10893308, member: 10461&quot;]OR...</p><p><br /></p><p>Another quick and easy (and relatively low-risk) technique I&#039;ve used is to get a small bowl of household strength hydrogen peroxide solution (basically the kind you might have in your medicine cabinet for first aid purposes), and heat it in the microwave to just short of boiling.&nbsp; </p><p><br /></p><p>Plunk the coin in there, and it will fizz off a lot of the looser crud.&nbsp; You&#039;ll need to take the coin out of the solution (carefully, so as not to scald yourself), and repeat the process for the other side, since it mostly fizzes on the uppermost side when it&#039;s lying at the bottom of the bowl.</p><p><br /></p><p>This works much as electrolysis does, but is not quite as risky, I think.[/QUOTE]</p><p><br /></p>

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