Ring identification

[Peecos]

These rings were on a recently purchased Brno. They’re higher than I like so I’ve ordered something lower. I’m curious if anyone can ID as the only marking is Australia. Solid steel and in good condition, they served the previous owner for four decades.

Thanks

 

[Beaver Skin]

Looks like they could be Lynx branded rings.

 

[Peecos]

Thanks, I’ll do some more google work.