US WWI Trench Periscope No. 10, Model of 1918 & Transport Case

Original era manufacture. A nice condition set produced by the Wollensak Optical Company of Rochester New York. Most of the original olive paint remains on the brass casing, with a turned wood handle which folds down. Adjustable eyepiece with fairly clear optics. Sound leather storage/transport case with an unbroken shoulder strap.