Cabside plate, Great Western Railway, "This Engine No 4082 Windsor Castle was built at Swindon in April 1924 and was driven from the works to the station by His Majesty King George V accompanied by Queen Mary on the occasion of the visit of their Majesties to the Great Western Railway Works at Swindon on April 28th 1924". 9 1/2"x6 1/2".