Patek Philippe Grand Complications 1518
First series-produced perpetual calendar chronograph
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Specifications
- Case size
- 35 mm
- Case
- yellow gold, round
- Bezel
- concave
- Caliber
- Valjoux 13-ligne column-wheel base (Patek-modified), calendar module by Victorin Piguet
- Movement maker
- Valjoux (ebauche), finished by Patek Philippe
- Movement type
- Manual
- Frequency
- 18800 vph
- Complications
- perpetual calendar, chronograph, moon phase
- Produced
- 1941–1954