This is a vintage silver 925 ring I bought in the US 10 years ago. It's simple and easy to match, with a unique feel. The inner circumference measures approximately 56mm. Because the inside is hollowed out, it feels quite roomy. It has a 925 stamp on the back. I have a sensitivity to lead, but I've worn this ring for many years without any problems throughout the year, so I believe the silver quality is good.