Caledonian Railway 72 Class

The Caledonian Railway 72 Class was a class of 4-4-0 steam locomotives that William Pickersgill introduced for the Caledonian Railway in 1920. Thirty-two were built and all of them passed to the London, Midland and Scottish Railway in 1923 and to British Railways in 1948. A slightly smaller earlier group, the 113 Class of 1916, numbered sixteen engines, so the two classes together came to forty-eight locomotives. They were the last express passenger engines the Caledonian ordered and, technically, the last of the Dunalastair series, which is why they were nicknamed Dunalastair V. All were withdrawn between 1959 and 1962 and none survives, although a replica is planned. Armstrong Whitworth built ten of the 72 Class alongside the railway's own St. Rollox works and the North British Locomotive Company.