OK. Every documentation, I studied by now, stated, that this Alfa Panoramica Zagato, as a 6C 2500 SS.
The newest comment from Jeroen Booij on "prewar.com" (05/05/2020), mentions,..."that the car wasn’t a 6C 2500 but an 8C 2300 of 1933 vintage that had been rebodied by the Milanese carrozzeria in 1943." Shipped over to Malaysia at about 1949, and crashed by Carlo Vigano in practice of the second Malaya Grand Prix of 1953.