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<p>[QUOTE=&quot;-jeffB, post: 1230552, member: 27832&quot;]I&#039;ve wondered whether small, consumer-grade cleaners are really powerful enough to cause cavitation, or whether they just rely on high-frequency <i>agitation</i>. I still haven&#039;t experimented on coins with mine, though.</p><p><br /></p><p>I&#039;ve figured that I&#039;d hold the coin with a pair of padded tweezers that span it edge-to-edge, rather than putting it in a basket. But, as I said, I haven&#039;t tried it.[/QUOTE]</p><p><br /></p>

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