Posted By:
Brent Butcheralmost the way Richard explained it but not quite. If centering or corners is the lowest sub the highest it can get bumped up is .5 point. If the edges or surface is the lowest sub it can get a full point bump.
Example:
cent = 5
cor = 8
edges = 8
sur = 8
then the card would grade a 5.5
cent = 8
cor = 8
edges = 5
sur = 8
then the card would grade a 6
When I first got back into collecting about 3 1/2 years ago Beckett is pretty much all I used for grading because they are only a couple of miles from my house. SGC is now my grader of choice for pre-war.