Help Identify - Please

[siwelreltub]

Hi,

I misplaced my great grandfather's half sovereign ring. I'm wondering if anyone knows any thing about the make of it?

Would have been from about the turn of the 20th century if not early 20th.

You're help would be much appreciated.

 

[TARSHA]

It's showing St. George Slaying the Dragon and there is an online coin club about it - I Googled.