Gioia's character surname, Fabbricotti, comes from a famous Tuscan family, which owned a huge villa in Livorno (presently, it hosts the Municipal Library).
The three thieves try to steal jewelry in a rich mansion with a lot of guests on the 31st December. They are found with the objects in the purse and sent away, thanks to the benevolence of the ambassador.
Then they go to a church, but the are posters with "Mese di Giugno" (month of June) on the walls.
Anna Magnani's dialect coach was British actor Peter Elliott
Ben Gazzara's voice was dubbed into Italian by another actor.