Classique « Grande Complication » wristwatch in 950 platinum. Hand-wound movement. Ring-shaped dial forming a flange in 18-carat silvered gold. Chapter ring with Roman numerals. The hour hand is an extension of the bridge supporting the two tourbillon carriages. Engine-turned by hand, a center plate featuring two apertures for the tourbillons rotates in step with the passing hours. Breguet overcoils. Sapphire caseback. Water-resistant.The back of the movement bears a hand-engraved drawing representing the solar system, inspired by the 60-second rotation of the tourbillons on themselves and their rotation in tandem around a center axis over a 12-hour period.