Need identification.....
 

Hello all,
I found a few days a photo of my moter's uncle from 1917.
He drives a Mercedes (can see the emblem).
Can you tell me what model is the car and some other details?
Cheers!

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[IMG]local://upfiles/14736/E8E51A866A984F0AB2FF38CD6106C849.jpg[/IMG]