Australia KGV Stamp With Inverted "Os" Perfin?new Discovery?

Hi,nice to see everyone again. im very busy looking for error/variety stamp in all my stamp album recently and I found one of this Australia kgv stamp with inverted "os" now is "so"(service official)in thousands of my Australia kgv series with and without "os". I know thing like this is very hard to come by and very special but not very sure whether it is common or rare in this issue as. could someone tell me that? if it is so rare like something you have never seen before, is this consider a new discovery? check it out and let me know what you think.thanks

***Edited by Forum Dad to remove yelling***

It's a backwards perfin. There are eight potential positions for a perfin. This is not rare.

David

I have a couple of backward perfins also--not much else to say about it.
Thanks for posting!
Gussyboy1

I have recently found several perfins from around the world that are upside down, backwards, or even sideways. It's nothing uncommon.