Visible from the caseback, the oscillating mass in the movement is delicately engraved. It's made from 18-karat gold and decorated by hand using a barley grain sample, carried out by guilloche Fast Take: This is certainly Piaget at its finest. As I wrote within our GPHG preview, this felt much https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/