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<p>[QUOTE=&quot;messydesk, post: 3277796, member: 1765&quot;]There&#039;s probably some truth to this.&nbsp; SEGS has a design patent on their slabs, but it has expired.&nbsp; I think that this is more a case of VHS vs. Beta, where both survived.&nbsp; When each grading service started, neither knew what would be the optimal size for a slab.&nbsp; PCGS got it wrong at first, then corrected themselves.&nbsp; Currently, there are makers of self slabs of both PCGS and NGC formats, and I&#039;m referring to Amos and Leuchtturm, respectively, not the counterfeit stuff.&nbsp; SEGS slabs actually fit the PCGS boxes better than most generations of PCGS slabs.&nbsp; Current ANACS slabs are probably the size they are so that they&#039;d fit in PCGS boxes with the lid closed.&nbsp; Had NGC been freely giving out their boxes like PCGS does, and had PCGS been stingy with theirs, that might not have been a consideration.&nbsp; Most of the reason for different shapes today is market differentiation.[/QUOTE]</p><p><br /></p>

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