They do not have sleeves and they have not been graded.
Kent Hull Gallery Trading Card Database
1991 Pro Set Jim Kelly Buffalo Bills #341
Errors / Variations Gallery - 1991 Pro Set Football
John Davis Cards Trading Card Database
Football errors and variations: 1991 Pro Set 1991 Pro Set Platinum 1992 Pro Set variations checklist – Baseball Card Variations Guide Book Vol 2
1990 Pro Set Values - MAVIN
1991 Pro Set Football Error Cards FOR SALE! - PicClick
1990 Pro Set Values - MAVIN
1990 Pro Set Values - MAVIN
1990 & 1991 Buffalo Bills football Trading cards here. - RCSportsCards