The 1991 Pro Set Super Stars Music Cards 131-260 are standard-sized non-sport trading cards featuring music-themed characters from the MusiCards franchise. Manufactured by Pro Set in the United States, these original cards are made of card stock and have a 20 Pt. thickness. While these cards are not autographed, they are a collectible item for music enthusiasts, perfect for fans of the 1991 Pro Set Music Singles set.