The white gold 5320 perpetual calendar features a vintage-inspired design, with a new opaline rose gold dial. The displays follow the classic Patek Philippe layout, with a twin in-line day/month aperture at 12 o’clock and a date indicated by a hand surrounding a moon-phase aperture at 6 o’clock. Day/night and leap-year indicators are also included for easy adjustments. The moon phase only requires a one-day correction every 122 years for extreme accuracy.
