Central locking switch
 

I'd like to fit a central locking switch inside my 1992 500E that basically does the same as pushing the driver's side door pin down. Wiring this up will be no problem but I am looking for a stock Mercedes switch with a logo portraying a door or similar that will look the same as the rest of the switches. Is there such a thing available and if so I'd appreciate a pic and a part number.

Flavio