I have had a ring for many years. I think my mother may have bought it at a house sale . It looks quite old and has a stone that rotates from brown to black.
It looks like a man's ring ring but is only a size 7.
It has a Patent number of 1552108 but the info does not state the purpose of the ring that I could see.
If you have seen a ring like before and know it's purpose, please let me know.
Thank you.
