3 1990-91 Factory Sealed Skybox Basketball Cases. Lot 287. 3 1990-91 Factory Sealed Skybox Basketball Cases. Stars include: Bird, Pippen, Jordan and rookie cards of T. Hardaway and Kemp. 20 36-count boxes, more than 30,000 cards! UPDATE: The cases are Series One. Winning Bid $75. Back to List Winning Bid $75 Back to List