R3835 Thompson Class A2/3 4-6-2 'Sun Castle' No.60523 BR Late Steam LocomotiveProduct Info 60523 Sun Castle entered traffic at Kings Cross on 2 August 1947, spending less than a year on top line services before being allocated to Leeds' Copley Hill shed on 30 May 1948. The Diagram 118 boiler was fitted after a Works visit in February March 1958, by which time Sun Castle was back on the East Coast Main Line, variously allocated between New England, Grantham and Doncaster sheds. Having served on general duties, 60523 was