US AIR FORCE POST “VIET NAM” ERA JET PILOTS TYPE “HU 39/P” FLIGHT HELMET, DATED 1977 AND MFGER’ED BY “GENTEX”, SIZE REGULAR

DITTO, MFGER’ED BY “GENTEX”, LARGE SIZE, SPEC MIL – H – 7151 AER , CONTRACT N383-407044, STRIPPED NO AVIATONICS, UNISSUED “NOS”