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<p>[QUOTE="desertgem, post: 772836, member: 15199"]IMO, it should read "has been <b>OVERDIPPED</b> it will no longer tone attractively." If a silver coin is going to be ATed, it will generally be dipped before the process begins. Otherwise the AT toning process could be uneven and spotty due to areas with thicker existing patina than other areas. When dipped first, the process can proceed evenly on the surface. AT is best on uncirculated or AU55+ coins that have not been over dipped, due to the flowed surfaces that remain. </p><p><br /></p><p>If you are really interested in the toning process, read the links in this posting. It will take some effort and study, but you will have a good understanding of silver toning.</p><p><br /></p><p><br /></p><p><a href="http://www.cointalk.com/t64441/#post657165" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t64441/#post657165">http://www.cointalk.com/t64441/#post657165</a></p><p><br /></p><p><br /></p><p><br /></p><p><br /></p><p>Jim</p><p style="text-align: left"><span style="color: #000000"><br /></span></p> <p style="text-align: left"><span style="color: #000000"><br /></span></p><p>[/QUOTE]</p><p><br /></p>
[QUOTE="desertgem, post: 772836, member: 15199"]IMO, it should read "has been [B]OVERDIPPED[/B] it will no longer tone attractively." If a silver coin is going to be ATed, it will generally be dipped before the process begins. Otherwise the AT toning process could be uneven and spotty due to areas with thicker existing patina than other areas. When dipped first, the process can proceed evenly on the surface. AT is best on uncirculated or AU55+ coins that have not been over dipped, due to the flowed surfaces that remain. If you are really interested in the toning process, read the links in this posting. It will take some effort and study, but you will have a good understanding of silver toning. [URL]http://www.cointalk.com/t64441/#post657165[/URL] Jim [LEFT][COLOR=#000000] [/COLOR][/LEFT][/QUOTE]
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