Will major auction houses submit high end graded cards for review before auction ?

[Snowman]

The centering on that 7 Mantle is incredible. If you were to auction it off, it would break a new record for a PSA 7 without question. There's no scenario whatsoever that it doesn't surpass $500k at auction in my opinion (assuming it goes to a major auction house that is). PSA's half-grades mean almost nothing. At least with SGC, they are fairly consistent with them. If the card has great centering, color and registration, you'll usually get the +0.5 half-grade bump. At PSA though, they just roll a pair of loaded dice and if it lands on snake eyes, you win. That 7 should absolutely be in a 7.5 holder (or a 6.5 if you think that's too high). It should never be in a 6, 7, or 8. Eye-appeal matters, and supposedly that's what PSA claims they give out half-grades for. This one has it in spades.