Kriegsmarine U-boat 2cm Flak targeting optics D C Z/2 bmk from 2nd World War

Well-preserved Kriegsmarine militaria collector's item, manufactured by Srb & Stys, Prague ww2

Submarine aiming optics for the 2cm flak, D Z C / 2, 4 x 15 °, manufacturer coding bmk, number 133273. Additionally marked with an M and N. Good condition with signs of wear and some surface rust. With crosshairs. Both filters can be switched well. Optics without damage or fungus. Clear view.

Dimensions; approx. 14 x 10 cm