I am very happy with this point you make it more difficult than I expected, I knew the car but without any number I could not know the race. Congrats for your photoshop work I thought It was an unmodified photo. Thanks for posting the original photo. This car won its class in Coppa Florio.
I post a photo with an Aries 3l driven by Laly an Rigal in Lemans 1927, It led the race but it could not finish.