I've never crossed a Beckett card to SGC. But I have crossed Beckett graded 1952 cards to PSA.|
Two dropped by a half grade.
One went up by a half grade.
One went up by a full grade.
One went up by one and one-half grades.
One stayed the same.
That tells me either Beckett or PSA (or both) have no freaking clue what they are doing.
If it were me, I judge each card on its own, but lean toward cracking and subbing to raw to SGC, if the card warranted it.
#1 in 1959 Topps