Noticeable with the caseback, the oscillating mass on the movement is delicately engraved. It's made from 18-karat gold and decorated by hand with a barley grain pattern, done by guilloche Rapid Just take: This is often Piaget at its very best. As I wrote in our GPHG preview, this felt https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/