GWR 3700 series City class

Of course City of Truro was not a one off.  It belonged to the 3700 class of locomotives designed by George Jackson Churchward.

Here we see another member of the class on the duty for which they were designed, fast passenger expresses.

Here City of Bath. 

The GWR 3700 Class, or City Class, locomotives were a series of twenty 4-4-0 locomotives. Ten of the twenty locomotives were rebuilt from William Dean 'Atbara' class engines, being converted in September 1902 and the rest following in 1907–1909. The other ten were built new during 1903 at Swindon. The whole class was gradually replaced and all but one scrapped in the period 1927–1931.