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|seats = 64

}}GWR Collett Bow-Ended Coach No 4786 is a standard 57ft full third coach, completed in Spring 1926 to diagram C54, lot 1369as part of a build of 79 vehicles. The internal layout as built seated 64 passengers in eight compartments, with a side corridor and a toilet cubicle at each end. 4786 was completed on 6 March 1926, one of 279 such carriages turned out from Swindon between 1925 and 1929. Although seven of these vehicles have been saved, none have been returned to original condition.

It was used on graduated from main line long distance services in the 1920s and 1930s to cross country and express secondary services until in the late 1940s and 1950s, before being converted . It was withdrawn on 6th February 1960 and modified for departmental stock for signals and telegraph use as DW150208 with S&T by 2 September 1961 at Shrewsbury.