This mystery seems to be solved already. I duplicated this post on the 1900/2000/2600 forum http://www.alfabb.com/bb/forums/1900-2000-2600-1950-1968/50461-most-unusual-1900-touring-coupe.html and the answer is there. Even though logged in, I have not been able to edit or delete my original post on this forum, or I would.
Most Unusual 1900 5-Window Coupe
I just came across this unusual 1956 5-window coupe on an English website (1956 Alfa Romeo 1900 SS For Sale on Car And Classic UK). Car is in Portugal (please, no "barnfind" jokes!). Rear and side windows are unlike any I've ever seen on a 1900 coupe, and there's an odd chromed vent on the fender, as well as vent windows or "cozy wings" in the doors. Anyone know anything about this car? I presume "C24952" on the web URL and photo tag are inventory markers by the agent and not a serial number of the car.
