The 1991 Skybox Promo set contains 2 trading cards. Raw card prices range from $14.99 to $14.99. 1 of 2 cards have current market pricing.
Source: HobbyCardIndex · Prices updated daily · https://hobbycardindex.com/sets/skybox-promo1991 Skybox Promo
Basketball ·
2 cards in set
Total Cards
2
With Prices
1