WW2 British Ross x5 MK IV RAF binoculars.
The binoculars were introduced in 1941 and made by Ross under contract to the Royal Air Force.
The B marking means bloomed, which means that the binoculars have a special surface layer to reduce reflection from the surface.
The binoculars are designed for spotting U-boats.
Broad Arrow highlighted.
Condition: In good condition.