Three interesting groups of progressive proofs featuring Jets players from the 1972 Topps Football issue. Each group includes 8 cards of the player depicted, fabulously illustrating how colors were added throughout the four-color printing process to create a full-color card. Proofs are included for running back George Nock, safety W.K. Hicks. and linebacker Al Atkinson. Blank-backed group (except for the three completed cards) remains in EX condition overall with several better.