Patek Philippe “Square Nautilus” 5821A top‑spec custom
Original‑data CNC case and bracelet, custom dial and hands, square date window.
Custom 330 non‑indexed movement, 4‑weight balance wheel.
Precision‑engraved bridges, gilt engraving – fully replicating the original’s hacking seconds and MEMS micro‑mechanical function. A truly accurate 330 movement.
