N PRR T1 DUPLEX 5500 SND

With the goal of developing more powerful motive power for express passenger service, the Pennsylvania Railroad introduced the class T1 Duplex 4-4-4-4 in 1942 with two prototype locomotives, and followed in 1945-1946 with 50 production models. Built with striking streamlining designed by Raymond Loewy, the T1 engines were large, powerful, and fast!