At least one source was not so deep that I couldn’t put my hand on it within an hour…
So, here’s what I’ve found.
Umberto and Bruno De Mola were two brothers from Trieste who emigrated to Belgium around 1933. In 1940, their body shop in Brussels was quite well known. Mid 1940, while Belgium was under German occupation, the owner of a circa 1931 supercharged 6C1750 wanted them to rebody the car, without providing drawings or precise request other than to make it the most beautiful car in the world (!).
It seems that panel beating took around one year to be completed. Result was a spectacular car with such features as wheel spats front and rear and covered headlamps (I know I have also period pictures, but those I haven’t found back yet). It was originally dark blue with red detailing. Seats were of dark green leather. The car spent the remaining war years in Belgium, then came into Dutch Prince Bernhard ownership. In 1947, it went back to De Mola’s body shop to be repainted in two shades of red. It won prizes at a concours in Ostende in 1948.
Later it ended in the USA where a Paul Hatmont swapped the 1750 mechanicals for a Ford six and related gearbox and rear end. Details like bumpers and spats were also lost. It was then sold to Jackson Brooks in Colorado who bought a 6C1750 chassis to rebuild it, but eventually had a replica Zagato body crafted for that chassis. Then Brooks found a 1948 6C2500 chassis (915695) which was adapted to fit the De Mola body. The entire car was restaured with crème leather. In 1973 the car was sold to Jim Southard (see Simon Moore’s car history for that name), then re-sold several times until it came in a Christie auction and shipped to UK in the late 80s.
This indeed has nothing to do with the 8C2.9 lookalike. I say so because I fail to remember any 2.9 with an original A-type body other than Simon's one, and certainly not a black/red one, so at least the body has to be a replica.