Found this awhile back and never found out what the markings were because of really bad pictures. I am much better at getting a mark picture so her we go again. This is a .2 carat diamond set in 800 silver. Also 5% gold 2% platinum. The Diamond is a transitional cut and probably early 1900s. The marks look like a horse? The initials W.O. or W.U. and then some undecipherable symbol. I assume the horse is the key mark here. No luck though. If anyone can help me out here this is an amazing ring and I'd love to know more!!