MG34 anti-aircraft spider sight 'BSW WaA4'

An excellent and guaranteed original AA spider sight for the MG34. This particular example is very well marked, and is certainly of early manufacture (pre-1940). The markings include the 'BSW' logo & 'WaA4' stamped on the outer ring, along a further 'WaA4' stamp to the base - all indicating production by Gustloff-Werke, Waffenwerke Suhl.
 
One of these parts would have been carried by every MG gunner, and was held within the belt-mounted tool pouch. A must-have accessory for any MG34!