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<p>[QUOTE=&quot;davidh, post: 2131895, member: 15062&quot;]Back before mercury was toxic I shined up plenty of dimes and mostly quarters with it.&nbsp; If my memory is correct, they only stayed shiny for a while and then turned dull.</p><p><br /></p><p>For those inclined to try it, you can also use Mercuric Nitrate, which is more toxic than straight mercury but takes a two minute or so dip to work.&nbsp; And it works well on copper coins.[/QUOTE]</p><p><br /></p>

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