This is all I know about the carriages.
The guys at Rosewood have been very helpful hunting up information for me.
'The coffin car'. He thinks it may have originally been a mail van as
> it has
> right shape and the doors look the part but without a number, it is
> impossible to say.
> BGV483 was originally a CLV with 5 compartments. One first class and
> one second class (both non-smoking) compartment had toilets. The other
> first class and two second class smoking compartments had no toilets.
> There were a number of similar carriages and they commonly appeared on
> suburban trains, were sometimes used on Gympie/Bundaberg trains and
> were also used on mixed trains (goods trains with passenger
> accommodation attached).
> CLV483 was converted to CLV483 in 1980, losing several compartments to
> the enlarged guard's compartment. It is not known when it was written off.