Original USAF P-4A Flight Helmet Date 1953, comes with suspension, chin and nape straps, comm cord and earphones, and leather oxygen mask tabs, helmet include Demand Oxygen Mask A 14 size Medium, Manufacturer is Dulbulien the Ohio Chemical MFC,Co, with stamp Property Air Force Us Army, the original P-1 hard helmet for jet pilots was introduced by the United States Air Force in March 1948. The Type P-4A was basically the same helmet with a sun visor added, improved earphones, and minor refinements to the web lining and straps, Helmet is incomplete and is being sold as a restoration object. I have carefully cleaned the helmet as it had been stored very poorly. Unfortunately, the Suspension Harness & Headband Assy is in very poor condition. I have included two pieces for the restoration, as well as a new connection cable. I have also included two earphones, the Earphones are present, the A 14 mask is in a condition appropriate to its age but has no major damage. It has no communication, also include is a Gentex Helmet Bag in nice condition, I believe this helmet was used by the German Air Force, possibly in F 86 fighters in the 50s-70s,