I am still here (just)! I've been so busy this year with work and messing about with my own cars I've not had any time for AP, but I still pop in to have a quick look most days. I'm going to try and dedicate a bit of time each week for puzzling as I have lots of interesting stuff lined up for new puzzles.
In the meantime, I came across another photograph of this car although still with no confirmation of the coachbuilder. It lists it as a 1935 chassis, rebuilt in 1950