416LANCE Posted January 1, 2022 Report Share Posted January 1, 2022 I have sent in over 150 cards so far to CSG and have been overall pretty happy with the results, understanding the scale differs from PSA and Beckett. That said I can't figure out how they get the final grades for instance I have had most of my cards with subgrades, so I have a 1984 Donruss Don Mattingly RC, got a 7 centering, 9 Corners, 9 edges, 9 Surface and a final grade of 7.5, not sure how they got to that? or a 1984 Dan Marino RC that got 8 Centering, 9 Corners, 9 Edges and 4.5 Surface and got a 5.5 final grade and a 1960 Carl Yastremski that got a 8 Centering, 6.5 Corner, 7 Edges, 5 Surface and got a 5 Overall, I just don't understand the math, can any explain the breakdown? Link to comment Share on other sites More sharing options...
jsrva Posted January 1, 2022 Report Share Posted January 1, 2022 Generally, a final grade can be no higher than 0.5 above lowest sub-grade. However, I think there are some exceptions to go one full higher grade above lowest sub. I have no explanation for your '60 Yastremski. Link to comment Share on other sites More sharing options...
