green Hella Fog Lamp Switch and special Bosch mount

Green Hella light-up switch with a special Bosch dashboard mount holder in good condition. The switch has three positions, and you can pull it. A lightbulb is installed at the back, in the center. The knob diameter is 2,5 cm. The switch mount holder is about 6,5 x 6,0 cm and stamped with "Bosch Logo" and "3 347 000 002". The rear of the switch is stamped with "HELLA 11/49 NES" and the bulb holder with "DBGM". Made in Germany in the 70ies.