[swarmee]

Focusing on the cards worth more than $10:
1988 Score Promos with 0's for the stats in 1987 and Career.


1989 Upper Deck Dale Murphy Reverse Negative
1990 Topps Frank Thomas NNOF RC and George Bush USA1 (may have made it into packs, theoretically)
1991 Topps Oil Can Boyd ERROR, Mark Whiten ERROR, Chris Hoiles ERROR,

1991 Topps - [Base] #48.2 - Oil Can Boyd (Black Tip of 40th Anniversary Logo visiible on front.)
Courtesy of COMC.com

1991 Topps - [Base] #42.2 - Chris Hoiles (White Inset Border on Front)
Courtesy of COMC.com
Whiten has hand extending past border.

Any 1991 Topps Desert Shield Star/HOF.

That's a start.