www.925-1000.com

Thank you everyone for the feedback. I'm new to collecting Russian silver as a hobby, so I was concerned that cleaning it would lower the value. Should I give it to a professional or do the old aluminum foil, baking soda, and salt trick? I think Qrt.S has the most logical explanation of this being П...

Some more detailed shots:

Hey all, I'm trying to figure out who the maker of this cup is... https://i.imgur.com/oNWLUwQ.jpg"%20alt="Commercial%20Photography https://i.imgur.com/EBI0En8.jpg"%20alt="Commercial%20Photography https://i.imgur.com/XJQJBVq.jpg"%20alt="Commercial%20Photography From my r...