Posted By:
Josh K.In the last month or two, I have sent about 30 cards to sgc to be crossed over from psa or gai slabs. Of those cards, most got an identical grade. Ive had about 5 that did not cross over b/c they would not meet my minimum grade (ie would have dropped a grade), Ive had a few that got 1/2 grade hits (particularly cards graded 3.5 or 6.5 where sgc has no equivilent). Ive also had four cards bump up - a t206 Keeler portrait from a psa 4 to an sgc 60; a t206 bresnahan portrait from a 4 to a 60; a 59 topps gibson rookie from a 5 to a 70 (5.5); and a 55 topps Killebrew rc from a gai 6.5 to an 84 (7).
If you want a higher grade, your best bet is sending it raw - but then you risk it not getting slabbed at all (as noted above).