Here my train of thought:
Looking at the turret it must be an italian plane (it has that strange "barrels sticking out from both sides design")
The layout suggest it's a light bomber.
So an italian, light bomber: probably a Caprioni, from the 300 series, but which one? (as a small historical note: the Caprioni 300 series where a very succesful bombers series with many sales abroad, like peru and sweden)
It looks like a late version (big engines and better aerodynamics then the other 300 bombers)
So I am going to say it's the Caprioni Ca-331 Raffica.