Vintage Bosch Alarm Switch SH / UHM 6V emergency

Vintage 6V Bosch Alarm switch SH / UHM for Police and Fire department emergency vehicles in good condition. The switch comes with original rare “Alarm badge”. The total diameter is 5 cm and the mount nut diameter is about 3 cm. Attached to the old cable is also the part “Bosch Germany M/SE 6/2” installed which is an “Entstörer” (=suppressor) for a good signal. The switch was connected to “Bosch SH / HEM 2/6 A3 / HO 37 B-02 DIN” (see last two photos, not included, but shows the wire instruction with functions of the switch). Made in Germany.