Now that is really weird....you know I've taken this ring off....a number of times to clean it...and I just took it off again....just because I'm checking it out more...and you know what....there's a new mark kind of like a square on the inside...kind of a green color....over some silver... you know something you might think you'd see if the hallmark had been soldered over....but I don't think it's anything like that...