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<p>[QUOTE=&quot;desertgem, post: 659512, member: 15199&quot;]It is somewhat simplified to say that yellow -magenta -cyan is the progression of colors on a silver coin as it does not take into consideration when more layers are deposited over previous ones. This url indicates the progression through several cycles of deposit.</p><p><a href="http://forums.collectors.com/messageview.cfm?catid=26&amp;threadid=716279&amp;highlight_key=y&amp;keyword1=color" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://forums.collectors.com/messageview.cfm?catid=26&amp;threadid=716279&amp;highlight_key=y&amp;keyword1=color" rel="nofollow">http://forums.collectors.com/messageview.cfm?catid=26&amp;threadid=716279</a></p><p><br /></p><p>The other links in this link&#039;s&nbsp; first posting charts the depth of the toning deposit and the ability of the human color receptors to interpret the thin film effect.&nbsp; It is difficult reading, but I think anyone doing so would have a better understanding of color progression.</p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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