Class 73210 Selhurst  was at the Mid-Norfolk's Diesel gala on Saturday 19th March 2011. This locomotive is in Inter City Executive liverly. It was built by English Electric Co Ltd in 1966 and is privately owned and based at the Mid-Norfolk Railway.

These class 73s were not normally seen in Dereham in BR days as they were made for the 650-750 volt DC third rail network in southern England. They ran for most of there time taking power from the third rail, but they have a small by railway standards 600hp diesel engine to generate power for the traction motors, when there is no third rail is available.

49 locomotives of class JA and JB were built in two lots. Six locomotives of Class JA being built in 1962 at the British Railways Eastleigh Works, these were numbered E6001 to E6006. Under the TOPS renumbering, these first six were to be given class 72, to mark them out from the second batch (Class JB), which were not quite the same.  In the end they  all became class 73/0 with the numbers  73101 to 73006.

The 2nd batch Class JB, were built by The Vulcan Foundry from 1965 to 1967. These were numbered as E6007 to E6049. Under the TOPS  renumbering they became 73/1 with the numbers 73101 to 73142. One of this 2nd batch never got a TOPS  number, this was E6027, it had been involved in some sort of accident and had been withdrawn.

73210 had the number E6022 when new so must have been part of the 2nd batch.