A finely made 5 inch gauge Orenstein & Koppel, the builder went to Bressingham where the preserved engine was then resident in order to measure and photograph it. Built from his own drawings, using castings from patterns he made to suit, this is a well-detailed model that runs particularly well - there's a clip of it running in the workshop here.
Steel boiler with expanded tubes, 90psi working pressure. Feed by injector and steam pump. Cast iron cylinders with slide valves actuated by Marshall valve gear, pole reverser in cab.
I collected this one from its builder, a man still modelling prolifically although now in gauge 1 - less a concession to age, more to living and working on a narrow boat (which he built himself and in which this locomotive has been on display for many years).
Hydraulic test @180psi, 90psi working pressure
Length 32 inches