Yeah, there's really no such thing as an Australian razor as far as I'm aware, not in the same way as for a German or US razor anyway. I believe we basically imported everything razor related, perhaps as was said with some rebranding to match the retail outlet. The only truly Australian-made razor would be a custom from one of the makers here like Stu.
That being said, "Australian" is in the eye of the beholder, and the view that "Australian" means made here is really quite a narrow one when it comes to razors (though not, according to our current Govt., when it comes to people - but I digress...).
So, for example, I have my great grandfather's razors, my wife's grandfather's razors and some of his barber's hones, and many many razors that have lived, for perhaps a century and more, here in Australia after coming here as "one pound poms" from sheffield or wherever. I consider these "Australian" razors.
But yeah, those "plectypus" (as my italian friend used to call them) razors, if in good condition, are OK razors.
James.