LOCOMOTION
The photo above is of a completed model of LOCOMOTION from 1825 to the designs and castings produced in Switzerland (see also Models To Build) . As well as being a most historic model it is also one of the most fascinating to watch with its early valve gear and slip eccentrics.
The model shown in the other photos is being made by Michael Ball and was on Display at the 2010 Guildford Rally. 
Robert Stephenson & Company, at Forth Street, Newcastle-upon-Tyne, was the world's first locomotive builder. This first loco, initially called Active, was given the name Locomotion later.  The boiler of the Locomotion had a single fire tube and two vertical cylinders let into the barrel and the four wheels were coupled by rods rather than a chain.
The model design also has a single fire tube, but for practical reason is gas fired. 
Castings are of superb quality as can be seen from the photos.Models_to_build.htmlModels_to_build.htmlshapeimage_3_link_0shapeimage_3_link_1