WWII WW2 Original German Kriegsmarine U-boat Carl Zeiss BLC 7x50 Navy Binoculars
Zeiss 7x50 Kriegsmarine Gas Mask Binoculars. No hued prisms. Serial number 2222332 and marked BLC. Most notably the the axel is secured with a screw and the top clamp to hold the rainguard whilst in use is much wider.