Original U.S. WWI X7.5 Model 1918 Trench Periscope by Wollensak Optical Co. With Leather Case French & Indian War " These were designed for

" These were designed for use in the Pacific theater

which continued on again off again for 60 years until in 1884 Great Britain added Burma to their Colonial Empire

in an extremely hard to find extra large size

Here we have a wonderful piece of Japanese WWII "Trench Art"

and the machine embroidery is in great shape

Original U.S. WWI X7.5 Model 1918 Trench Periscope by Wollensak Optical Co. With Leather Case French & Indian War " These were designed forOriginal item: Only One Available. Measuring 19 inches in length, this is a very nice WWI Era Model 1918 Battery Commanders periscope. In X 7. 5 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: TRENCH PERISCOPE NO. 10 X7. 5 MODEL 1918 M. F. G'D BY WOLLENSAK OPT. CO. ROCHESTER, N. Y. U. S. A. No. 4517 R. G. C.