[Jim McDougall]

Originally Posted by Will M

Here is another with ring and a search here could find more..

https://collections.royalarmouries.o...ject-7439.html

Thank you Will, that 'triangle' guard is another of those that fall into the same period as my example being discussed, around 1750, give or take a few years.
The thing I have been noting is that it seems by 1759, the pommel side mount became used, and the pommel ring seems to have largely ceased.
I'll need to locate another image of the one you note here as we are unable to post the Royal Armouries example.