VR,, that HR is from natural wear! There are several out there. Some worn during the war and then the US vet kept wearing it!

No matter how smooth the outside the inner engraving is still pretty good!

There are other photos on this topic of worn rings like that one. You just don't see the things Tony is talking about when they are that worn.. IF a true cast you would see pock marks/bubbles the more worn it is.
This photo is of a famous HR. In good worn condition. The engraving looks deep and fine. You can see enter marks from the engraving tool and even exit marks. [plunge and exit marks]

Ramsperger_e.JPG (16.13 KB, 174 downloads)