Diesel worksplate Robert Stephenson & Hawthorn Ltd 6988 Newcastle Works 1940, Ex 0-4-0 diesel mechanical shunter. Supplied new to the Air Ministry at the Royal Aircraft Establishment, Farnborough Hants with running number A.M.W.171. After closure of the RAF railway, it was sold for scrap in 1969. Oval cast brass, face restored rear ex loco, measures 13in x 8.5in.