6233 Duchess of Sutherland awaits the right away from Swanwick Junction with a train for Butterley, 12th July 2008. Thirty eight 7P "Princess Coronation" class locomotives were built between 1937 and 1948 and 6233 was outshopped in July 1938 from Crewe Works and was part of the third batch of her class. These were unstreamlined, painted in LMS standard crimson lake livery and had a single chimney and no smoke deflectors and cost an estimated of £13,800 each. 6233 was initially allocated to Camden MPD. She acquired a double chimney in March 1941 and because of drifting smoke acquired smoke deflectors in September 1945 before being painted in postwar LMS black livery in September 1946. With the creation of British Railways on 1st January 1948 she was allocated to Crewe North MPD. She was given her BR number 46233 in October 1948 and repainted in BR Brunswick green livery in 1952 or early 1953. In June 1958 she was allocated to Carlisle Upperby MPD before eventually being withdrawn from Edge Hill MPD in February 1964.