Original U.S. WWI X7.5 Model 1918 Trench Periscope by Wollensak Optical Co. - Formerly Part of the A.A.F. Tank Museum Francotte-Martini Rifles & Parts for the 12th Royal Bavarian

for the 12th Royal Bavarian Infantry "Prince Arnulf" Regiment

and it is definitely a non-magnetic type

made circa 1860 for the U

The rear sight looks to be a period replacement

Area reconnaissance refers to the observation

Original U.S. WWI X7.5 Model 1918 Trench Periscope by Wollensak Optical Co. - Formerly Part of the A.A.F. Tank Museum Francotte-Martini Rifles & Parts for the 12th Royal BavarianOriginal item: Only One Available. Measuring 19 nches 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 optic came to us from the American Armoured Foundation, Inc. Tank and Ordnance Memorial Museum. The AAF Tank Museum was a living memorial dedicated to the Tank and Cavalry soldiers