Tintorette print of a passing train

Print, passing train, by Dean and Son, about 1848. Coloured lithograph with a circular image of a passing train comprising a 2-2-2 locomotive with a single carriage. A guard is seated on the roof at the front of the carriage. Two boys are seated on a wooden fence alongside the railway, and one of them is waving to the train. In the background is a castle among trees, probably intended to represent Windsor Castle. The train is probably from the Great Western Railway. Around the base of the image are the words "Tintorette printing by Dean & Son, Threadneedle Street, London." In modern card mount.