Original U.S. Korean War Era US Air Force Security Police Combat Defense Force M1 Helmet Liner for the Strategic Air Command - WWII MSA Liner U.S. Documents & Books UH-1C is a dedicated gunship

UH-1C is a dedicated gunship version

They include the British CROWN / GR and CROWN / CROSSED SCEPTERS for manufacture in Birmingham

giving this the possibility of also being a smoke grenade

At the center

Original U.S. Korean War Era US Air Force Security Police Combat Defense Force M1 Helmet Liner for the Strategic Air Command - WWII MSA Liner U.S. Documents & Books UH-1C is a dedicated gunshipOriginal Item: Only One Available. This is a very nice example of a genuine WWII "High Pressure" helmet liner by Mine Safety Appliances (MSA). The liner was then reissued for post war use during the Korean War. The liner is marked on the left side with the unit insignia of the U. S. Air Force Strategic Air Command. Helmet liners such as these were often worn during training as well as a patrol helmet, as the steel helmets were not required, and could