The Indian locomotive class WL of 1939 was a class of 4-6-2 "Pacific"-type steam locomotives used on 5 ft 6 in (1,676 mm) broad gauge lines in British India, and then in post-partition Pakistan.
[1] The four members of the class were built for the North Western Railway (of British India) by Vulcan Foundry in Newton-le-Willows, Lancashire, England, in 1939, and were delivered the following year.
[1][3] Upon the partition of India in 1947, they all went to Pakistan.
[2] The class WL of 1939 is not to be confused with the Indian locomotive class WL of 1955, the first ten members of which were also built by Vulcan Foundry.
[1][3] According to Vulcan Foundry's publicity material, the two classes bore no resemblance to each other.