Stores reference 22c/1391. Size 3. An extremely rare early blue cloth inner flying helmet. The Type 'F' was the first helmet designed for use with the MK.1 bonedome and predates the later and far more common Type 'G'. The blue cloth helmet shell is in very good condition with just light fading/soiling. It retains the correct adjustable elasticated strap at the nape of the neck, and is fully wired with flexible loom, receivers and NATO plug. Very good soft leather earpads. Note the single row of oxygen mask press studs. A very good used example of this rare early variant. Stock code H27480.