Hi fellow Aussie,
I haven't tried this supplier yet, I only just found them.
AKC Mail-order Knives

They are in Australia, their stock doesn't look that extensive but maybe they have more not listed on their web page. Not sure how the link will work so you may have to scroll to around the middle of the page. They also list some nice looking cut throats along with pins and a heap of knives from around the world. I was directed to this page from the (now) owner of the Joseph Rodgers & Sons trade mark. They suggested I may be able to find info' on the make there, but buggered if I can find it.

I have used this supplier:
Straight Razor Maintenance & Repair Needs

From the US, good delivery and as you will see on their web page a huge selection of scales, pins etc for restoration.

Good luck.