Well, the original card is here:
1991 Bowman #63
so we know that this wasn't issued before 1991.
The seal reads "GUARANTEED SIGNATURE SC". It looks like a seal that was intended to be crimped on the corner of the card (as opposed to a fully circular one that is hanging off the edge), so I don't think there's any text or logo we're not seeing.
What could "SC" stand for? Stadium Club?
-Tom
Ted Musgrave card collection 98.9% Complete: Cards Known: 1013, Cards Owned: 1002
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