I've never seen anything like this! What a neat way to pay tribute to american history! This is obviously vintage piece - this is a buffalo nickel that was forged into a ring! The band itself tests for solid sterling silver, but I do not think the coin is - might be plated. The coin itself is about 21mm in diameter. Size 7.25 Please inspect and enlarge the pictures to assess the condition of the item for yourself. Please ask any questions you might have. Vintage/Pre-owned/antique items are being sold as is. Pictures are not altered and colors have not been adjusted. Due to technical reasons, colors may appear differently on your electronic devices. Pictures may also be enlarged to show better detail. 💎gemstone, 14k, 10k, 18k, sterling, silver, gold, estate, ring, pendant, earrings, loose, natural, stone, genuine, synthetic, lab, diamond, moissanite, vintage, real, gemstone jewelry, engagement, anniversary, promise, wedding, plated, gem, necklace, brooch, fire, crystal, jewel, gift, authentic, collectable, affordable, tested, luxury, natural, opal, emerald, aquamarine, topaz, sapphire, tourmaline, zircon, spinel, investment, ruby, alexandrite, stamped, investment 💎