 Photographs of the original 56025 from 1955 show that instead of the graffiti, the engine had a lined saddle tank with an early British Railways "cycling lion" crest and, unlike the model, an enclosed footplate (as a works shunter, it would not have required a large quantity of coal).Most other members of the class were unlined black with an open footplate.The model is powered by a small, 12 V "HP motor" of the same type as used in Scalextric slot cars, as well as the Hornby models of the British Rail Class 06 and GWR 101 Class.