Most Ansaldo Radiator badges have white lettering with a blue background. I believe that this badge is quite rare as it is from one of of the first models produced in 1921.
Radiator for a 1939 SS-Jaguar 2½ Litre car (Saloon or drophead coupe). Surround in very good condition, complete with badge. Radiator core needs attention. Update: The radiator-core has been sold but the shell with grille is still available for sale for Euro 2750.