Rare complete (!) coastal artillery communication gasmask with headset

Scarce complete coastal artillery communications headset with communications gasmask. The set is complete with all cables and straps and manufactured by Siemens. Very hard to find a complete set complete with headset and both microphones. The gasmask is named to Rosel Halamoda and unit marked Sch 19250. The rubber cables are mostly flexible but somewhat fragile at some points. Very hard to find set in very good and over complete condition!