Italian E 431 series.

The E 431 three-phase alternating electric current locomotives were built in 37 units between 1922 and 1925. They served mainly at the head of the Turin-Rome express trains. In relation to the importance of the services performed, they could circulate in double traction.  The design of the E 431 was developed to make locomotives available for fast and heavy trains, capable of reaching 100 km / h.