Hand-engraved and hand-painted white mother-of-pearl dial. Onyx subdial. 18-carat white gold case and applied ring. Singing bird automaton movement, hand-winding mechanical movement and push-button automaton triggering mechanism. Sapphire whistle system. Hours and minutes self-winding movement. Power reserve of 38 hours. Diameter 47 mm. Numerus Clausus of 8. AUTOMATON Singing bird automaton movement, hand-winding mechanical movement and push-button automaton triggering mechanism. Sapphire whistle system. Hand-engraved platinum.