This digitization of a unique 11x14 print found its way to me via a granddaughter of Roy Tuley. It is also a hand-colorization of a black & white photo. Color film and processing were only widely available at the beginning of the 1950s, but were very costly compared to black & white. The application of inks and tints to colorize photos had been popular for decades with results dependent on the patience and skill of the person applying it. It’s not known who applied color - but I get the sense they grew tired at some point and saved time by applying the same color to groups of vehicles at once - creating unlikely groups of yellow, red, or green cars. I would likely have done the same : ) My best guess on age of this photo would be the early to mid-1950s, as the Olgiatti Bridge spans can be seen while under construction.