50-01

Hand-wound mechanical movement with a 26.2 mm diameter and 5.9 mm height. It utilizes a screw balance with weighted gold screws, a 28,800 A/h rate, a 42-hour (+/- 5%) power reserve, a flat hairspring, 21 jewels, and Incabloc shock protection. Complications include a perpetual calendar with central hours, minutes, and seconds, complemented by a finely finished movement featuring a swan-neck regulator, screwed gold chatons, blued screws, polished gear profiles, double solar-finished crown wheels, faceted periphery, hand-polished teeth, and a hand-engraved balance.