Original U.S. WWII M6 Tank Periscope by Minneapolis-Honeywell Regulator Company - Dated 1943

Original Item. Only One Available. This is a lovely example of a WWII M6 Tank periscope, as used in US WWII-era armored tanks such as the Sherman and Stuart. There were 12, M6 periscopes in each late model Sherman. Six mounted in various places, one in the driver’s hatch that rotated, and a fixed one in front of him. The co-driver had the same layout, just on the other side, he used the hatch or fixed periscope to aim the bow machine gun. The loader had a rotating periscope at their station, and the commander had one in his hatch. There were two complete M6 periscopes in brackets on the turret walls, one near the loader, and the other by the commander. The amazing piece of American tank engineering, the driver’s hood holder, stored four complete M6 periscopes.

This periscope was mounted by inserting the unit into a bracket and hooked onto a lip (the 'hook' is visible in the photos).  The knurled center knob was then tightened to secure it in place.  If either of the two glass lenses were shattered during a firefight, the lens could be quickly removed and replaced by turning the flipped-knobs on each side of the periscope nearest the damaged lens, which would release the lens for replacement. 

The periscope retains its data plate which denotes it as PERISCOPE M6 with a 1943 manufacture date. The periscope is in good shape and has an unused adjustment knob setting sheet.

Comes ready for further research and display.