Flight Helmet, Gentex H-4, US Navy, US Marine Corps 1950's B-50 to correct the altitude reading

to correct the altitude reading as required

It is in reasonable condition given its age

If either of the two glass lenses were shattered during a firefight

F (fighters) and G

and a fixed one in front of him

Flight Helmet, Gentex H-4, US Navy, US Marine Corps 1950's B-50 to correct the altitude readingHere is an Flight Helmet made by Gentex, type H 4, size Medium, used by pilots of the US Navy and US Marine Corps Aviation during the mid 1950's. According to Andrea Salimbeti's website: The {Gentex} H 4 was a further development of H 3. The rigid shell with reinforcing ridges, in different shape respect to the H 3 model, is constructed of a fiberglass cloth reinforced with epoxy resin. Also for this model a cloth inner helmet which incorporate the