There is a old thread on the changes of PSA and SGC labels in their history
http://www.net54baseball.com/showthr...ght=SGC+labels
Quote:
No pictures, but this is what I was able to dig up about SGC flips/slabs. The dates are speculative..
(1) SG on the front(1998)
(2) SGC on the front, but no 1-10 grade(99-04)
(3) SGC on the front with 1-10 grade + gold label on the back(05-08)
(4) SGC on the front with 1-10 grade + SGC pressed into the back(09-current)
I read something about there maybe having been a change in the placement of the barcode on the "SG" flips. Don't know for sure though..
Also, a semi-related SBC flip(from 1988-90?). Apparently one of the SBC guys was involved in the early stages of SGC and they used many of the SBC concepts..
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