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<p>[QUOTE=&quot;Publius2, post: 24568231, member: 105571&quot;]One resource is the annual EAC auction where each coin offered has an EAC grade and those that are encapsulated are listed with the TPG grade.&nbsp; See expansion on this below.</p><p><br /></p><p>Also, Heritage often lists the EAC grade along with the TPG grade.</p><p><br /></p><p>But as a general statement, there are no pricing guides based on EAC grades.</p><p><br /></p><p><br /></p><p><br /></p><p>Just to clarify something, EAC (Early American Coppers Club) does not grade anything.&nbsp; The Club has published a grading guide but the Club itself grades nothing.&nbsp; I know that you know this [USER=9270]@kanga[/USER] but others reading this might not.</p><p><br /></p><p>In addition to my comments above, I would have to say that there is no mathematical relationship that one can apply to correlate the two grading systems.&nbsp; I suppose if you took an extremely large database and applied statistical analysis to it, then one could create a relationship with confidence markers.&nbsp; But I suspect such a thing would only be valid, if then, on an extremely large population and not for an individual coin.&nbsp; Too much variance.</p><p><br /></p><p>What I do is look at a graded coin and then grade it myself by the EAC system.&nbsp; That, as you say, takes experience and it is next to impossible to do without the EAC Grading Guide, pictured below. </p><p><br /></p><p>That said, and more to your question, what&#039;s the coin worth when it has a variance between the EAC grade and the TPG grade?&nbsp; The TPG market is far larger than the EAC market.&nbsp; That is, the price in the market is set by the TPG grade.&nbsp; So, the simplest answer is that the TPG grade is what sets the market price and I have seen that assertion validated time and again.</p><p><br /></p><p>As a buying strategy, what I do is assess the coin by EAC standards and decide if I think the difference between the EAC grade and TPG grade is acceptable and that the price in the TPG market - <b>for that individual coin- </b>is warranted.&nbsp; I definitely do not adopt the mindset that says &quot;This coin with a TPG grade of AU-55 is only an EAC XF-40 so I won&#039;t pay more than an XF-40 price.&quot;&nbsp; That is invalid reasoning because the &quot;XF-40 price&quot; in that formulation is the TPG market price.&nbsp; If you analyze the EAC Auction results, you will see that statement validated, by and large.</p><p><br /></p><p>[ATTACH=full]1557811[/ATTACH][/QUOTE]</p><p><br /></p>

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