Wehrmacht box for "V.K.(Fbg.bf) radio remote control cable

A Wehrmacht box for the extension cable of the remote control unit for the Torn.Fu.b1 and Torn.Fu.f (Vl.K.(Fbg.bf). The box originally held a cable reel (sold seperately on the website) with 50 meters of cable. This allowed artillery observers to move up to 100 meters forward of the position of the radio. The paint and the text on the lid are worn, but the box comes with the often missing reel retaining pin still in place.