During my recent Hols down under I visited a prison in Queensland (on a bank holiday Sunday) and left a few badges with the Gate Officer. After two months nothing in the post until yesterday, then bingo
4 patches and a BB cap.
Interesting to note that the Queensland Service have done away with the Crown, yet NSW still retains it!
Also note the Blue and Yellow checker-ed pattern around the cap, I have note come across this on Prison - Corrective hats before.
Regards