The 1991 NFL Pro Set Series I Football Trading Card Box 4 box lot is vintage, factory-sealed box containing standard-sized trading cards featuring players like Emmitt Smith, Barry Sanders, and Brett Favre. Manufactured by Pro Set in the United States, this box includes cards made of card stock and includes the base set, checklist, and rookie cards from the 1991 season. This collectible item is a must-have for football fans and collectors looking to add iconic players from the National Football League to their memorabilia collection. Loc. S1
