Quote:
	
	
		| 
					Originally Posted by puckpaul  And then I get really confused by Nm-MT 8 (oc) grades. If centering helps determine the grade, than just give a grade and not a qualifier!? | 
	
 So a card can be 90/10 on the front and PSA claims they would give a card that off-centered a 3.  
https://www.psacard.com/resources/gr...andards/#cards
However, the card could be in wonderful shape and that is the only major flaw.  So PSA says the card is effectively NM-MT except for the issue of it being off-centered.  Those vintage cards that are in great shape (pack fresh!) aren't really as bad as VG 3 which normally would have a crease and some rounding of the corners.  As such, they award it 8(OC) and it counts as a PSA 6 equivalent for a registry set, and normally sells for a PSA 5 to PSA 6 price.  
The link above also talks about the other items that PSA considers qualifiers: OF, MK, MC, etc.