Silver wave ring

Here we have:
A heavy silver ring in two parts with a wavy join.

What’s the story?
I think that this was a prototype for a commission but I really can’t remember.
Detail:

Details:
It’s 14mm wide so quite a big chunk of silver. I can cut it down a little if you’d rather have it thinner. I’ve left the inside edges unfinished so that the fit is as close as possible.

Ring size: O

Can it be sized?
Maybe down a size or two.