No, the rear bumper should wrap around to the wheel arch. Also the sill does not rise towards the font wheel arch.

It comes closer to the Mercedes-Benz 220 Cabriolet A [W187] (1951-54), but I fail to see the front lights in the wings. It looks more like separate lights.

So we end with the smallest model, the Mercedes-Benz 170S Cabriolet A [W136IV] (1949-51), the forerunner of the 220 Cabriolet A.