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<p>[QUOTE=&quot;GDJMSP, post: 24660, member: 112&quot;]LOL !! I somehow knew you were gonna ask that question. </p><p><br /></p><p>Have you ever noticed that I rarely have anything to say in regard to early colonial copper ? Well that&#039;s because I know next to nothing about early colonial copper&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" />&nbsp; But in theory - yes. At least from what I do understand.</p><p><br /></p><p>Just think of all the ways you learned to tell how to grade - use them. As I said - the principle is the same. It just takes a while to get used to the baseline reference.[/QUOTE]</p><p><br /></p>

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