A superb original lighting cable as used with a variety of optical instruments, including the MG34/42 MGZ, the 10x80 Flakfernrohr and SF14 periscopes etc. 
 
This particular example is retained in excellent original condition, and is certainly one of best examples we have had to offer. The bulb holder is clearly marked with the 'Busch Rathenow' maker's logo and serial numbered. 
 
This lighting cable has also been tested and is in full working condition, as shown.