Posted By:
Brian E.SAGARD:
I will do my best to answer your questions but there are those way more knowledgeable on T206 backs and possible combinations than myself.
1) To my knowledge the Cobb Green portrait with EPDG back has not been seen before and I did not think it is possible because the Green Cobb only appears as a 150 series, an earlier series. EPDG came out later thus not possible for the Green Cobb. Same goes for the Cobb Bat On. EPDG is seen in the Cobb Red and Cobb Bat Off (I own one and used to own the other).
2) T206 Cobbs have been rebacked before and been erroneously graded by PSA and/or SGC. If the Green Cobb is not believed to be possible and PSA/SGC has screwed up before, I am concerned it might be rebacked and missed by a grader.
3) I don't think SGC annotates why a card is given an Authentic label, at least they didn't used to.