Poster 1933 GP Monza. That car looks like an Alfa Romeo 8C 2300 Monza as well.
Araca (Enzo Forlivesi Montanari)
<a rel="nofollow" class="external autonumber" href="https://www.italianways.com/wp-content/uploads/2017/09/granpremio-monza-08-732x1024.jpg">[1]</a>