Message:

<p>[QUOTE=&quot;GDJMSP, post: 1696097, member: 112&quot;]I don&#039;t think there is a single cause, I think it&#039;s a combination of several things. And just like it is with any toning, the resulting look can vary greatly depending on which of those things are present, not present, and when they are present or not present during the life of the coin.[/QUOTE]</p><p><br /></p>

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