ft 5 in boiler J50/3 38 built 1926–30, 4 ft 5 in boiler, steam brake, left-hand drive, long bunker J50/4 14 built 1938–39, 4 ft 5 in boiler, vacuum brake, left-hand drive, long bunker with hopper All were built at Doncaster, except the last fourteen which were built at Gorton. Further orders were placed in 1939 and 1941 totalling 25 more locomotives, but these were cancelled in 1942 after a number of components had been manufactured. Withdrawals began in 1958 with the arrival of diesel shunters and ended in 1963 for the normal stock. 7 of them survived as departmental stock until 1965. The class became extinct in September 1965 when Departmental No. 14 (ex-68961) was withdrawn and scrapped. None of them survived into preservation. Numbering On the GNR, the numbers were 157–164, 166–176, 178, 211–230; these were increased by 3000 by the LNER. The first ten engines built by the LNER were numbered 3231–40, following on from the GNR engines; but those built from 1926 were given scattered numbers between 583 and 636, between 1037 and 1086, and 2789–94. In 1943, new numbers were allotted in a continuous block from 8890 to 8991; these numbers were applied between January and December 1946, but before this could be done, the oldest ten, nos. 3157–64/6/7 were temporarily renumbered 3180–9 in May and June 1945. They duly received their permanent numbers 8890–9 between June and December 1946. Under British Railways, the 1946 numbers were increased by 60000. Notes References External links The Gresley J50 & J51 (GNR J23) 0-6-0T Locomotives Class J50/1 Details at Rail UK Class J50/2 Details at Rail UK Class J50/3 Details at Rail UK 0-6-0T locomotives J23 Railway locomotives introduced in 1913 Scrapped locomotives Standard gauge steam locomotives of Great Britain