Posted By:
Marc S.although I didn't specifically create evidence of it (as I was not trying to expose PSA to a large audience), when I trimmed some cards as an experiment and got them back from PSA (about 25% graded), the following would be suggestive proof:
A) Before scans of the cards
B) "After" scans of the cards -- along with the pictures/scans of the remove portion
C) Scan of the card in a PSA holder.
Specifically with vintage cards -- it is much easier, in my mind, to track specific cards. Card attributes, such as print dots, centering, color, etc. make themselves much easier to say more definitively that a certain card is the same one.
With modern cards -- this is often less possible, except for serially numbered cards, like the Tom Brady card below, which was trimmed and BGS clearly encapsulated.
cards.
Note -- I am not being a PSA apologist here -- they have and sometimes do grade altered cards. I'm just not convinced in this particular case you've highlighted.