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<p>[QUOTE=&quot;Cherd, post: 24486357, member: 24754&quot;]Interesting, I wasn&#039;t aware of this option, but it certainly looks like an efficient way of evaluating this type of data! Assuming that the last 3 bars represent the last 3 years, then this plot seems to support what I was thinking (no real increase compared to the 5 years prior). I&#039;d of course need to pull up similar plots for the other categories to make sure that I&#039;m not misinterpreting things in that direction.</p><p><br /></p><p>Admittedly, the majority of the information that I&#039;ve pulled together is specific to NGC slabbed coins sold through Heritage. Not sure if those parameters play a role or not.[/QUOTE]</p><p><br /></p>

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