CFN Neuner 3 signal flashlight metal Germany 1950

A German made CFN Neuner flashlight from just after WW2 for professional use I am guessing. Shaped after the army models with a large domed glass lens, as well as a signal functions but no cap for low light purposes. There are a red and green shifter to change the color of the light. It takes a large old style battery / power cell. The chromium knob on top needs to be pushed down and twisted to lock in the on position. The black metal housing is in good shape with clear signs of use. The lens and leather pieces are in great condition as well. I have not tested it and cannot guarantee it’s functioning but I see only a little bit of rust on the inside yet not on contact points. Measures 11,5 cm or 4 1/2 inches high. Check the attached video for some more vintage flashlights and lamps.