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<p>[QUOTE=&quot;physics-fan3.14, post: 2516169, member: 19165&quot;]I generally prefer NGC for just about anything, so I would say NGC. Others will say PCGS. Really, as long as you stick to either of those two, you&#039;ll be fine (someone will inevitably get on here and tell you to send them somewhere else - ignore them: they are less accurate, less well respected, and sell for less money). </p><p><br /></p><p>While SuperDave is correct that collectors like a certain number of inches of reflectivity, in reality the TPG&#039;s don&#039;t measure that. To them, it is subjective.[/QUOTE]</p><p><br /></p>

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