Do you have the VIN for the car that the lock came out of. You can provide the VIN to Benz and they can get you a key. I'm sure you would have to show something to get this. If you could do this with just any VIN, all you would have to do to steal a car would be to read the VIN through the windshield, order a key and drive it away. Of course, I suppose a car thief finds more sport in breaking glass and lock mechanisms.
GPHS Class of '67