This Locomotive was made by Ron Fox back in the mid 1980’s from tinplate and fibreglass. It’s modelled after the Victorian S class “Spirit of Progress” locomotives. Only 3 of these were sold in kit form with this one been assembled by Ron as a demonstrator at train shows and HRCAA meets. (This one has a “Fox” mechanism the other two were assembled with “Goddard” mechanisms)
Ron Fox was one of only a few hobby manufacturers who kept Australian O gauge alive during the “dark ages“ of the 70’s and 80’s. You can find out more on Ron Fox and his career in manufacturing O gauge on his YouTube channel.