I can't seem to be sure of the year this B equates to?
In case the links to my images don't work, they are all here on IMGUR : https://imgur.com/a/gY0NU8z
Plus, any idea who this maker or what this mark is?
There is also this writing that I wonder what it means. 3789/ET ?
Any help is immensely appreciated. I bought this ring for myself and am only curious about it's history.
Thank you