Help identifying a gold round (The Imperial State Crown)

[SteelHand]

I need some help on finding out some information on this round. It's 1/10th oz and has been XRF'd at .9999. I think it may be part of a gold medallion set and any insight would be gratefully appreciated. I suspect the HH under the crown is for Horst Hahne, an engraver who worked at the Royal Australian Mint from 1965-1998. I have tried searching in Google using a variety of keywords but nothing pops up. My local forum here in Australia (Silver Stackers) was unable to help so I'd thought I'd try my luck here.

 

 

 

[sixgun]

Well looking around, as i'm sure you have, i haven't found anything. 
On a value basis i think it would be spot price of gold. It is not a recognised mint - it is the sort of thing you might have found in a Sunday colour supplement back in the day and someone paid way over the odds when new. The font on the obverse side looks a bit clumsy in style and size which is another reason why i think this medallion does not come from a major mint.
It looks most like a third portrait of the Queen which appeared on English coins 1985 - 1997. 

Edited March 17, 2022 by sixgun