[mintacular]

Don't forget to check border "chipping", especially on darker border cards like 71s and 75s. Do a completed listing of PSA 8 or 9 on eBay and look up and down those cards and ask yourself if you have ones that resemble them. Chances are not on the vast majority. For high grade stuff basically the card has to be fresh out of the pack with razor sharp corners, great centering, no snow or printing lines/defects, edges that don't have the chips, etc. As stated centering will usually winnow down your crop vastly off the bat, don't forget top to bottom, for example on '72s are to determine but many are o/c but doesn't jump out...