Scarce WWII German SSK 90 Aircrew Flight Helmet

Extremely scarce SSK 90 flight crew helmet by Siemens. These helmets saw only brief official service in 1941 but continued to be used unofficially on a small scale. Use was discontinued as the helmet is quite heavy, being reinforced steel plates. Originally it was thought in the collecting community that these were strictly for jet pilots. While this use may hve been possible, it was not on any offical basis. At any rate, this is an extremely scarce helmet. Condition is excellent. Leather shows only gentle signs of use (see photos). Elaborate chinstrap assembly is complete and intact. Internal lining shows no damage. Siemens label is clean and clear. An excellent example and well priced.