Original U.S. WWI X7.5 Model 1918 Trench Periscope by Wollensak Optical Co. With Leather Case Antique Guns and this example is marked

and this example is marked 14605 next to the lanyard loop fitting

Aluminum fin assembly exhibits proof and inspection stamps

KA-BAR Baby Grizzly

Here we offer Gurkha production Lee Metford Rifle serial number 10 (it looks like 90)

and at that time was part of Holland

Original U.S. WWI X7.5 Model 1918 Trench Periscope by Wollensak Optical Co. With Leather Case Antique Guns and this example is markedOriginal 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. 8356 R. G. C.