Vintage ring, amethyst, Showa era, retro, size 13-15 This is an old ring I found while decluttering my parents' house. I believe it's silver, but there's no "SILBAR" marking, probably because it's from a long time ago. It's not mine, so I don't know the exact size, but I tried to measure it. I apologize for the imprecise measurement. I hope someone who understands this will purchase it.