Binos

I beleive these are used by airborne and commando units, they were originally made for bomber coomand pathfinder units to use at night due to their large occular(?) diamater to allow more light in and the yellow lens. I have two pair of these one in bakelite with yellow lens and one in brass with clear lens. I have a picture somewhere of a British PARA officer wearing them. Your leather lens cover is in very good condition.