Original British WWI Mk IX Trench Periscope By R. & J. Beck Ltd. Dated 1918 Cannons & Mortars The shell is maker marked

The shell is maker marked with a stamping on the underside of the rim that reads ZD / 0

which has done a very good job of preserving it

with an extra layer of aluminum around the sides to support the chin strap

known as the Militärverdienstmedaille in Silber

Partially new made

Original British WWI Mk IX Trench Periscope By R. & J. Beck Ltd. Dated 1918 Cannons & Mortars The shell is maker markedOriginal Item: Only One Available. A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line of sight observation from an observer's current position. In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45 angle. This form of periscope, with the addition of two simple lenses, served for observation purposes in the trenches