The South African Railways Class 19D 4-8-2 of 1937 is a steam locomotive.Between 1937 and 1949 the South African Railways placed two hundred and thirty-five Class 19D steam locomotives with a 4-8-2 Mountain type wheel arrangement in service. Between 1951 and 1953 thirty-three more were built for other operators like the Rhodesian and Angolan railways and the Nkana and Wankie mines.