Dad built this 4mm scale model in the mid-1970s (best guess), it was set to oo gauge in the 1980s when it would often the only working engine on my model railway!
Built almost entirely from brass, with a “K’s” motor and the biggest flywheel you’ve ever seen in a model this small! In the finest tradition of my father, it is unfinished.
The model survives to this day, although it has been through several wars.
It inspired my build of PATIENCE, and follow on models of the same.