Tipo 80N of 1931/1932
Here is a promo photo of an "Autobus Tipo 80 N." that appeared in an Alfa Romeo sponsored calendar printed for 1932. The calendar had a page devoted to each week and there was a bit of two/three-line advertising at the bottom of each page that was a promo for Alfa Romeo. The first pages (from which this image is taken) were devoted to images of Alfa Romeo cars and trucks/buses/etc. exclusively. Each page in the weekly section had a photo of some interesting area of Rome. In fact, the title of the calendar is "Calendario Italiano 1932 - X Roma". The Roman numeral "X" referred to the 10th year of fascist political power. Hence, we can think that each publicity photo was taken probably in 1931 and was advertising (albeit somewhat gently) Alfa Romeo products available in 1932.