Girard-Perregaux 1966 Full Calendar

The Girard-Perregaux 1966 Full Calendar, reference 49535-11-131-BB60, has a 40 mm steel case with an entirely polished finish. The case measures 10.8 mm thick and carries a water-resistance rating of 30 metres. Self-winding calibre GP03300 contains 27 jewels and has a power reserve of 46 hours. The movement operates at 28,800 vibrations per hour (4 Hz), with Côtes de Genève on the oscillating weight. Sapphire front glass covers the silver opaline dial with its date, day, month, moon phase and central seconds. A black alligator leather strap fastens with a steel pin buckle. A sapphire display back reveals the movement beneath the curved case profile.