MK.11 Repair party electrical helmet with A MK.1 liner dated 1938 by JCS&W Ltd. J. Complon Sons & Webb Ltd. (London) and A MK.11 chinstrap. There were also repair party Gas, Water and Roads. The name of the helmet maker is not legible. See the military section of helmets and headgear for a more detailed descriptions of the helmet chin straps and liner marks .