I’ve had this ring in my personal collection for about ten years, and have always thought that it dated from the 1920s. (It has an Art Deco kind of feel to it, well I think so anyway!) I used to wear the ring a lot, but sadly the advancing years have made my fingers swell, to the point where it no longer fits. I never really looked at the hallmarks closely until today – I remember that one of them was a 900 for 900 parts per thousand of silver, showing that it was almost certainly made in continental Europe. Getting the magnifier out, I found that the other mark was a rabbit’s head and the number 3. A quick search led to this forum discussion:

https://www.smpub.com/ubb/Forum7/HTML/000136.html

It would appear that my ring is Czech in origin. And it isn’t Art Deco at all but probably dates from the 1960s, when the rabbit hallmark was reintroduced in Czechoslovakia after a 34 year hiatus. So if you see a rabbit hallmark on a piece of silver, then look to Central Europe.

PS: Below is my attempt at taking a close-up picture: