Manufactured by the International Latex Corporation in the early 1950s, the K-1 partial pressure helmet was the first mass produced U.S. high altitude helmet and used in such aircraft as the B-47, B-36, F-80, F-100 and various X-planes. The U.S. Navy also used the K-1 helmet but on a limited basis. The green fiberglass outer shell has the correct large U.S. Air Force decal on the front. The hood/neck shirt has the International Latex Corporation K-1 label dated February 23, 1955. Complete with removable face plate made of molded plexiglass featuring tiny wires within for electrical heating, microphone, earphones and oxygen hose.

Very good. The fiberglass outer shell has a couple hairline cracks on the left side and a couple minor chips missing from the bottom edge at the back. The rubber lining to the hood/neck shows some hardening and some loss. Most of the U.S.A.F. decal remains and the face plate has some minor scratches but remains clear.