Original British WWI Mk IX Trench Periscope By R. & J. Beck Ltd. Dated 1918 Cannons & Mortars 000 Polish prisoners from the

000 Polish prisoners from the German September 1939 offensive

which has done a very good job of preserving it

all also remaining undamaged and functioning properly

Berdan II was among the most powerful service rifles in the World

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

Original British WWI Mk IX Trench Periscope By R. & J. Beck Ltd. Dated 1918 Cannons & Mortars 000 Polish prisoners from theOriginal 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