Russian Stamped Ring Marking Identification, YNW(?)

[Bread52487]

I think the pictures work. Forgive me, I am not super knowledgeable on forums. I found this ring the other day at a free things giveaway on my campus. I only just noticed the markings on it. They are very small, but identifiably Russian. I wanted to know how I can better figure out where it is from, so I can figure out the exact materials. I know it is silver, though the materials mark that should also have the location mark is very worn. I have not been able to find anything on the linked websites, and even just knowledge of similar pieces that exist is super helpful!