Deke Slayton’s ASTP shirt assembly from his Apollo-Soyuz mission training. Mustard color shirt from the Apollo Applications Program (AAP) (Skylab flights 2, 3, 4, and ASTP) used during training or backup. Label on shirt reads: “Shirt Assy…Size: Medium; Crewman: Slayton.” Shirt is sealed in plastic with a NASA-MSC “Cleaned for service” sticker affixed to the inner bag, stamped “Visual.” Shirt was found in bonded storage in 2003 at the Johnson Space center and later deacquisitioned to a museum, which then gifted it to the consignor. In fine condition. Slayton, an original Mercury 7 astronaut, would wait 16 years for his first trip into space aboard the Apollo-Soyuz Test Project. RRAuction COA.