Paul Pietsch drove a Maserati 4CLT/48 or 4CLT/50 at the Italian GP in 1950. There are some inconsistencies regarding this entry. Sources either list Pietsch as a private entry driving a Maserati 4CLT/48 or as a Scuderia Milano entry driving a Maserati 4CLT/50 (chassis 1612). Unfortunately I can't find any pictures of Pietsch's Maserati at this race.
It is well known Pietsch drove a Maserati 4CLT in German hill climb races. Winning the Bergpreis Freiburg Hill Climb in 1950. Felice Bonetto finished second in this hill climb. Looking at the pictures in revs institute the car of Bonetto was definitely a Milano Maserati (either chassis 1611 or 1612) I'm not sure on Pietsch his car. But this could be the link to the Milano team.
I would like to know which chassis Pietsch drove at the 1950 Italian Grand Prix and the chassis used by Pietsch and Bonetto at the Freiburg hill climb. Any information or more pictures would be greatly appreciated.