British Military binocular 7 x 50 bino prism No 5 Mk 5
On the left hand tube is written "OS 419 MA " This would stand for Optical
Store : Drawing number 419 showing the main arrangement of the design
The "MA" means that it was issued without a case while a "GA" suffix would indicate issue with a case (this obviously became confusing when cases were added/lost, etc. so the suffix was later omitted.)
Bino prism No 5 Mk 5 x 7". The original Info on the left and right cover was milled off. Why ??? But probably the maker was " Ross London".. The reticle is on the right side. On the lower bridge near the objectives, there is a "broad arrow"
The bino originally was painted green.