More photos in linked posts.
From information panels:
In Australia, guard's vans were often also used for carrying parcels and light freight and usually had large compartments and loading doors for such items. Some of the larger vans also included a compartment for passengers travelling on goods services or drovers travelling with their livestock. The small compartment at the front of this van would have been used to carry passenger's pets or a drover's dog.
Guards Van (Brake Van) (ZL 448)
This of is an example of the most numerous type of brake van used by Victorian Railways over a very long period. It was built at Newport Workshops and entered traffic in 1914. In 1961 it was altered to. incorporate long travel draft gear.
From information panel:
This very significant van is one of 71 box vans built at Newport Workshops in 1893 with a solid timber door and a barred door to provide ventilation when carrying fruit or vegetables. These vans were the last design of H class box van on Victorian Railways, and only remained in their intended use for a relatively short time.