Kriegsmarine binoculars.
Many sources say that these rubberized binoculars were mainly used by U-boat captains.
Binocular:
Marked '7x50 beh 454268' on the left side.
7x50= Magnification factor/Objective diameter
beh = Ernst Leitz, Wetzlar
454268=Serial number
The optic is clear.
The outgoing lense side has rubber covering. Quite hard to find.
With original leather string.
Overall a very nice set.