Question re old cards
I've noticed some old Exhibits cards have decent grading (PSA 3) for example, but have really unattractive brown splotches very prevalent.
Is it possible that mold or some other decay can start to rot a card after it is slabbed? Or a process in place continues after slabbing.
Just seem some ugly old browning cards that have decent registration.
It is reasonable to assume slabbing stops the aging process? Or can cards go to hell years after after slabbed?
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