Original U.S. WWI X6 Model 1918 Battery Commanders Periscope by Wollensak Optical Co. With Case British Field Gear It is the standard "Fir

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

We do not know if this is the original paint

except for spring

Between these are oak leaves

Original U.S. WWI X6 Model 1918 Battery Commanders Periscope by Wollensak Optical Co. With Case British Field Gear It is the standard "FirOriginal 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.