⭕ WW1 German Military Trench Periscope Binoculars. Carl Zeiss Jena signed Carl Zeiss, Jena. D. R. P. Relief - Fernrohr Vergr = 10., black lacquered and leather covered aluminum, wood handle (restaured and small lack), leather case. length c. 32 cm.

This Carl Zeiss Jena Trench Periscope Binoculars must have been produced before 1904 (between 1896 and 1904) because of its handscript writing Carl Zeiss Jena on the prism cover as well as the DRP script which stands for Deutsches Reichs Patent (the patent on porro prism glasses Zeiss had until 1904).