Noticeable in the caseback, the oscillating mass on the movement is delicately engraved. It's made from 18-karat gold and decorated by hand that has a barley grain pattern, completed by guilloche The steel circumstance for this new-generation Black Bay is the greatest the gathering has ever experienced. The prior-era Black https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/