Manufacturer/Model: Carl Zeiss Jena blc U-Boat 3rd model 7X50
The Serial #/Year of Manufacture: 55818= Probably 1943-44
The only markings on this binocular are “7X50” over “55818” over “blc” on the right prism plate underneath the rubber armor. “blc” is the German wartime code for the manufacturer, Carl Zeiss Jena.
The U-Boat 7X50 was manufactured from 1941 – 1945 specifically for use aboard submarines and was officially designated as the “Doppelfernrohr 7X50 für U-Boote ‘U-Bootglas 7X50’, in 1943 the numbering of U-Boat binoculars began at 38300 to end at approximately 69150 in 1945.
The build of this binocular is remarkable and unequalled by many WWII hand-held binoculars. It is a fixed focus design for maximum sealing and weatherproofing. The primary user of the binocular could, however, set the focus to his eyesight by removing the rubber armour from the prism plates to access a large focus screw at the base of each eyepiece which could be adjusted using a screwdriver.
They are in excellent condition considering what they have survived, as pictured the are various chips and wear to the paint. They were well used as the hands of the user has worn the paint accordingly. The optics are superb with no fogging, dirt, or haze. Also a few age related cracks to the rubber as you can see in the pictures.