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<p>[QUOTE=&quot;GDJMSP, post: 1303607, member: 112&quot;]There are many different brands sold commercially. But pretty much all of them contain the same basic acid - thiourea that does the work.</p><p><br /></p><p>More important than the brand however is the experience necessary to use it. It is extremely, let me stress extremely, easy to ruin a coin using them. Any of them.</p><p><br /></p><p>It is also extremely common to end up wishing you had never tried dipping the coin. Even for those that do have the experience.</p><p><br /></p><p>Best advice - if you don&#039;t have the experience, don&#039;t try.[/QUOTE]</p><p><br /></p>

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