That was a fluke. Someone on another forum asked about parts for a 1933 MB 200 sunshine limousine (his description). I looked it up and found that website. I cruised the pictures, drooled over the some of the stately three-row field command cars and noticed the 4WS buggy.

Sixto
95 S420
87 300SDL
83 300SD ... $1100, see cars forum