The very typical roofline gave the coachbuilder away. Searching for this vehicle led to the following information:
License plate number: 1735 - RG4
Year of construction: 1933
Base vehicle: Citroën 10 CV (Rosalie)
Designer: Guillaume Busson
Background information:
This Citroën 10 CV was the first in a small series of about 10 vehicles with the Grümmer patented Aéroprofile design where inclined door glass at the upper side was implemented. Several different chassis' (Citroën, Alfa Romeo, Renault, Hotchkiss & Peugeot) were equipped by Grümmer with this Aéroprofile concept. A notable fact is that the designer's name was also mentioned on a plate/tag/plaque on this car. Mostly coachbuilders feature only their own name, but this car also specified the name of it's designer Busson.
