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<p>[QUOTE=&quot;medoraman, post: 2468708, member: 26302&quot;]I know what toning is. Its the reaction of the coin&#039;s metal with outside chemicals under certain conditions. Please do not assume I do not know what it is.</p><p><br /></p><p>My point/thought process is that by dipping the coin you would remove the toning that may be adhered to whatever the OP scraped off the coin. I have used this method successfully with silver ancient coins. Hard adhesions simply slid off the coin when dipped due to the coin dip breaking the silver sulfide bond that was adhering the encrustation with the coin.[/QUOTE]</p><p><br /></p>

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