Thanks to Cam Smith:
“Season Ticket Shop’ is a funny backmark, isn’t it?
This article indicates that it was a business of the New South Wales Railways to issue tickets and passes.
Cam states this button by A. J. Parkes was found with the following button, and that this pairing has been seen before:
I suggest that the first (Tudor Crown) button pre dates 1954, and the second (St Edwards crown) post 1954. Perhaps they were uniform buttons for the staff?
Please contact us if you know anything more.