The New South Wales stainless steel carriage stock was a type of passenger carriage operated by the New South Wales Government Railways from 1961 until 1993.

The Southern Aurora was an overnight express passenger train that operated between Australia's two largest cities, Sydney and Melbourne. First-class throughout, including the dining facilities, the Southern Aurora featured all-sleeper accommodation. The train first ran on 13 April 1962 after the opening of the North East standard gauge line from Melbourne to Albury, eliminating the break-of-gauge between the capital cities.