Traditionnelle Tourbillon Retrograde Date OpenfaceThe expression of an avant garde aesthetic, the demand for mechanical sophistication and the desire to share creative expertise are at the heart of this Traditionnelle tourbillon retrograde date openface watch. The opening onto the architecture of the 2162 R31 movement with its slate gray shade achieved by an NAC surface treatment perfectly visible on both sides of the watch, highlights its mechanical power. The retrograde date display, complemented