Southern Railway 1380 was a streamlined 4-6-2 steam locomotive built in 1923 by American Locomotive Company (ALCO) of Schenectady, New York, for the Southern Railway (SOU) as a member of the Ps-4 class, which was based on the United States Railroad Administration (USRA) Heavy Pacific design with some minor differences.

[5] The Ps-4s were based on the United States Railroad Administration (USRA) Heavy Pacific design, differing the smaller 73 in (1,854 mm) driving wheels, a slightly shorter boiler, an additional firebox combustion chamber, and a Worthington 3-B type feedwater heater.

[6] They produced 47,535 lbf (211.45 kN) of tractive effort, allowing them to pull 14 passenger cars at 80 mph (129 km/h).

1380, repainted in a new Virginian green and gold paint scheme after his visit in the United Kingdom where he admired the country's London and North Eastern Railway's (LNER) apple-green passenger locomotives.

1380, had their original Baker valve gear replaced with Walschaerts type due to the former risking to reverse itself at high-speed, damaging the locomotives' wheels and the rails.

[4] Additionally, it was given a larger streamlined tender, which holds 14,000 US gallons (53,000 L) of water and was originally from sister locomotive No.

1380 was on motive power pool service, where it was used to protect passenger schedules in case of a diesel locomotive was unavailable to pull SOU's top-priority passenger trains such as the Birmingham Special, the Peach Queen, and the Piedmont Limited.