This is a pair of WWI US Navy Night Glass 3x50 binoculars. These were made at the US Naval Gun Factory Annex in Rochester, NY during WWI. This particular pair was only produced in limited numbers and is a rare find. They have swivel mounted amber filters in the eyepieces and extendable sunshades. They are in great condition and come with the original case. Lens focus clearly. The case has the leather top handle and belt loop. The closure strip has torn off (will be included, but is no longer attached).Marked: US Naval Gun Factory Optical Shop Annex Rochester, NY United States Navy Night Glass 3 Power US Navy 14040
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