This is a wicked looking device. I will say that ice climbers are totally bad ass! Every tool they use in climbing is pointy and sharp! This may be a earlier version of the Salewa Eisstichel (Ice Dagger).
This item is unmarked with no manufacturers marks.
ASMU ice piton dagger with leather handle. Shown in the 1964 and 1967 Sporthaus Schuster catalogs as ASMU Eisstichel. The logo stamp does not have the mountain scene within it. Donated by Matthias Hofle.