An excellent example of a part built model of a large live steam driven locomotive. I am unsure of the exact gauge but there is 3" between the outer edge of the wheels and 2 1/4" between the inner edge of the wheels.
The models has a full set of large wheels, painted in a green livery. It has pistons joining the wheels and everything turns as it should when moved. There are buffers at the front of the train and the bed on which a tender would sit at the rear. The whole piece is excellent quality and the model has been mounted onto a good quality wooden base.
There is a steam inlet valve in the middle near the front of the model and it has been tested with a small air compressor and everything runs well. A video can be provided if requested.