Kriegsmarine Coastal Artillery Communication Gasmask M30 (Küstenartillerie Gasmaske M30). All German Army personnel were issued with a gasmask, carrying canister and accessories and were required to have it readily available at all times. Fear of the potential use of chemical warfare agents made the gasmask and canister a constant companion of the German soldier through-out the war. A large part of the gasmasks issued to Kriegsmarine personnel were equipped with the unique addition of a microphone connection that was designed to accept a screw on microphone. The M30 gasmasks were produced in a rubberized canvas with metal fittings while the M38 gasmasks were produced in molded, rubber and were also equipped with metal fittings. This is a M30 example mask with with screw-cap to attach the microphone making the person wearing the mask able to communicate through the radio, especially intended for coastal-artillery personnel. Hard to find example in good used condition!