Does anyone have or seen others like these?

[Dal]

G'day Folk's

I've had 2 of these Officer style badge's for quite a while and have thought they were possibly "Private Purchase", but have come apon a 3rd one (The one with damage to the red backing) which now has me doubting my theory.

The closest match I've been able to find is what I'm pretty sure is Firmin made, as you can see in the photos is very close! Please also note that the tabs on the back are all a little different.

I'm wondering if anyone else has one or seen any the same?
I know Gaunt, J&Co and Stokes made similar but uncertain of this maker or if a rare item?

Regards Dal

PS; This is my 1st post, so if I buggered something up...please let me know!