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<p>[QUOTE=&quot;Troodon, post: 1590486, member: 4626&quot;]In my experience &quot;gem&quot; usually translates to 67 or higher (66 at bare minimum) but &quot;gem&quot; is not an officially defined term; it just means in someone&#039;s opinion (usually the seller&#039;s) that the coin has good eye appeal and is better than the average.&nbsp; Modern proofs tend to be of high quality anyway due to better production and handling practices by the mint, so &quot;gem&quot; doesn&#039;t mean a whole lot on something like this.&nbsp; It doesn&#039;t represent something better than the average; it represents the minimum expectation.</p><p><br /></p><p>Same with &quot;deep cameo.&quot;&nbsp; Cameo means that there&#039;s strong contrast between the devices (which should be frosted) and the field (which should be mirrored).&nbsp; For any US proof since about the 1970&#039;s this should be generally be accepted already.&nbsp; (&quot;Ultra cameo&quot; means precisely the same thing but is the term used by NGC where the other big TPGs use &quot;deep cameo&quot; instead.)</p><p><br /></p><p>For modern proofs PF-67/68 is the basic expectation and not very rare; they don&#039;t start commanding any significant premiums until 69 or 70 (for many issues even 69 doesn&#039;t command much of a premium).&nbsp; The mint is just too good at making proofs these days for anything short of perfect or almost perfect to be that special.[/QUOTE]</p><p><br /></p>

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