Creep Klingon Skull Ring Silver 925, no stamp Creep brand stamp present Inner diameter of ring: 19mm This is a skull ring with a Star Trek Klingon motif. It's over 20 years old. It was only tried on indoors and then stored in a jewelry case. There are scratches and scuffs from the manufacturing process. I don't think there's been much sulfide formation. There may be some oversights.