DA1431 comes to town

nigels, im not sure where the design came from. its very similar to the australian flat top T class [thanks, ucwepn] as well.
in your pic, is that facing front or back? with the DA, that would be backwards.

Officially that is the nose or front of the class 20,

in practice though, class 20's very rarely worked alone as single engines, they were a little underpowered and were generally connected in a 'nose to nose' configuration. This gave much better visibility for the driver when travelling in either direction, it also had the pulling power of x2 locomotives. When they were paired nose to nose, plugs and leads would connect the two locos so they could both be controlled by a single driver,