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<p>[QUOTE=&quot;GDJMSP, post: 2547840, member: 112&quot;]Must ? I sure never have, and I&#039;ve used it plenty of times. In fact I strongly advise against using soap on a coin at all because soap is one of the hardest things there is to get all the residue off a coin. Yeah, it can be done, but some other chemical is required.</p><p><br /></p><p><br /></p><p><br /></p><p>Yes, of course it can. And yes you have to dip it again. But dipping copper is special, not easy. The evidence, namely the mere existence of so very, very, many Red coins clearly indicates that it can be done. But it aint easy ! And no, I will absolutely not explain how.[/QUOTE]</p><p><br /></p>

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