Ah, vending box. That is what I need to look for to get unwrapped cards.

I just obtained a Slugfest, and it had a combination of cards still inside:
-Fleer Ultra '93 which are gloss front and back.
-Score '91 which are matte front and back.

The cards are not sticky, but most are stuck together in a big block, probably from being compressed in the card dispenser for a long time. Hopefully, if I buy an old vending box of cards, they won't be stuck together.

Once I get the CPU baord back in, I will check the operation of each type.