I own a few Cartier pieces and I bought them either from their online store or direct at the flagship store in Canada. I just bought a small JUC ring from the flagship store in Japan. I know I always should check the serial number on the pieces before buying, but I always trusted them since I’m buying directly from the store. However, now I’m back home, out of boredom, I was looking at the ring and I don’t see any engraving on it. Do they have microscopic engraving or I just got scammed?