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<p>[QUOTE=&quot;halfcent1793, post: 3403287, member: 86853&quot;]You can&#039;t do a linear or any other kind of mathematical extrapolation between grade points, as the numbers are just a shorthand for a perception of quality and have no quantitative meaning. In general a supposed &quot;45&quot; coin is a bit nicer than a &quot;40&quot;, but it&#039;s still XF, not AU. That means in general it may have a small premium above the typical XF. </p><p><br /></p><p>That said, I agree with what some others have implied - that some XF coins are really nice and may command more dollars than some AU coins. This whole business of trying to calculate a price from a grade is a fool&#039;s errand. No offense meant to those who choose to believe otherwise, but facts are facts.[/QUOTE]</p><p><br /></p>

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