Patek Philippe Grand Complications 3971
Sapphire-caseback running mate to 3970 Second Series
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Specifications
- Case size
- 36 mm
- Thickness
- 13.5 mm
- Case
- round
- Caliber
- CH 27-70 Q (Lemania 2310 base, Patek-modified)
- Movement maker
- Lemania (ebauche), finished by Patek Philippe
- Movement type
- Manual
- Complications
- perpetual calendar, chronograph, moon phase, leap year indicator
- Produced
- 1986–1991