Original U.S. WWI X6 Model 1918 Battery Commanders Periscope by Wollensak Optical Co. With Case British Field Gear except for spring

except for spring

The grip plates are pressed black leather fully checkered

It is the standard "Fir Tree" with a white "91" in the middle

The Ersatzteilkasten (replacement parts case) is plated steel with 3 internal compartments

Original U.S. WWI X6 Model 1918 Battery Commanders Periscope by Wollensak Optical Co. With Case British Field Gear except for springOriginal item: Only One Available. Measuring 27 3 4 inches in length, this is a very nice WWI Era Model 1918 Battery Commanders periscope. In X 6 power, these were used to help view and plot artillery attacks from behind cover, to avoid exposing the commander to danger. The bottom of the periscope still has the manufacturers markings: BATTERY COMMANDERS PERISCOPEX6MODEL 1918M. F. G'D BYWOLLENSAK OPT. CO. ROCHESTER, N. Y. U. S. A. No. 2210R. G. C.