Patek Philippe Perpetual Calendar Chronograph 3971 Ref. 3971J-001

The Patek Philippe Perpetual Calendar Chronograph 3971 3971J-001 has a 36 mm yellow gold case.

The Patek Philippe reference 3971 is a rare variation of the 3970, exclusively fitted with a glazed screw back. Most were fitted with a silver dial. The pictured example however, a 1989 model later to appear in a Christie's auction, features a rare gilt dial.

Diameter: 36 mm
Case: Yellow Gold
Released: 1989
Movement: Patek Philippe caliber CH 27-70 Q

Specifications

Case and dimensions

Case diameter: 36 mm
Case shape: Round
Case material: Yellow Gold
Crystal: Sapphire
Case back: Open

Dial

Dial colour: Gold
Indexes: Arabic Numerals
Hands: Breguet

Movement

Calibre: Patek Philippe caliber CH 27-70 Q
Movement maker: Patek Philippe
Movement type: Handwound
Display: Analog
Power reserve: 60 h
Frequency: 18000 vph
Jewels: 24
Movement diameter: 30 mm
Complications: Chronograph, Column wheel, Date, Day, Hours, Leap Year, Minutes, Month, Night Indication, Perpetual Calendar and Small Seconds