Leather Dienstglas carrying strap marked dow 41

Excellent Dienstglas carrying strap or Trageriemen in very good condition. The strap is nicely marked dow 41 which indicates production by Waffenwerke Bruenn, Prerau plant, Czechoslovakia (renamed ‘Opticotechna GmbH, Werk Prerau / Protektorat’ in 1943) Very hard to find a maker marked Dienstglas carrying strap in this condition!