Posted By:
MarkIn my opinion you do see less of the OVER 300 Subjects and they are from the scarce series. I have seen a few Eddie Collins and Mathewson, Cobb with the scarce back but most are listed with PSA as SS commons in the SMR price. A few cards are only from the SS and not with any other back that are seldom seen. The cards listed as SS get double the price of other backs. hope that helps.