Original U.S. 1950s Navy High Altitude Full Pressure MK II MOD. 1 Flight Helmet with Visor - NASA Mercury Program Sten Gun 4 1/2" at the rear

4 1/2" at the rear seam and the top is 4 1/2" in diameter

There is little silver wash retained

who was one of 1

Condition of the flag is very good

Sure to appreciate in value over the years

Original U.S. 1950s Navy High Altitude Full Pressure MK II MOD. 1 Flight Helmet with Visor - NASA Mercury Program Sten Gun 4 1/2" at the rearOriginal Item: Only One Available. This is an ultra rare example of a full pressure United States Navy high altitude Mark II Model I flight helmet with its original gold paint. The helmet was manufactured in part by the B. F. Goodrich Company and the Firewel Company, Incorporated. The data plate on the left side of the helmet lists the helmet as part number GR 70 with serial number 96. Features a clear glass retractable visor in great fully functional