The XI "Aosta – Gran San Bernardo" hillclimb on 1 Settembre 1949,<a rel="nofollow" class="external autonumber" href="https://soulcarsrace.com/2015/08/24/maria-teresa-de-filippis-vincendo-contro-i-pregiudizi/">[1]</a> this is Maria Teresa de Filippis before the race (she became 5th place in the 750 ccm class). She usually raced a Urania 750 ccm (1948 to 1950), and the results list<a rel="nofollow" class="external autonumber" href="http://www.cameva.it/index.php?option=com_content&amp;task=view&amp;id=28&amp;Itemid=33">[2]</a> indicates she drove a Urania. So this car would then be the Urania.
Bertazzini.<a rel="nofollow" class="external autonumber" href="https://www.alfabb.com/bb/forums/other-italian-cars/73515-fiat-1500-stabilimenti-farina-5.html">[3]</a>
1949-09-01
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/38870827@N03/3595711783">flickr</a>