Cal. 5201 is an oblong movement from Audemars Piguet designed for the Millenary line. It features an “open heart” view of the balance and bridge at 9:00 on the dial. The movement measures 28.59 by 32.74 mm (12.5 by 14.5 ligne).
- Audemars Piguet Millenary, Ref. 77244, 77247, 77248