Patek Philippe. A fine 18K rose gold manual wind perpetual calendar chronograph wristwatch with moon phase

Ref: 3970, Sold 26th July 1991
Patek Philippe. A fine 18K rose gold manual wind perpetual calendar chronograph wristwatch with moon phase
Reference: 3970
Date: Sold 26th July 1991
Movement: 24-jewel Cal.27-70 manual wind, adjusted to heat, cold, isochronism and 8 positions, freesprung Gyromax balance, Seal of Geneva, No.875.893
Dial: Silvered, faceted 18K rose gold baton hour markers, outer 1/5th second divisions with Arabic 5 minute markers, subsidiary dials at 3, 6 and 9 for constant seconds with 24 hour indication, 30 minute recording with leap year indication, date with moon phase indication, apertures for day and month at 12, gold leaf hands, blued steel centre chronograph hand
Case: Brushed and polished round, screw down exhibition back, round chronograph pushers, quick set buttons at 6, 10 and 12, down-turned lugs
Buckle/Clasp: Signed 18K rose gold buckle
Signed: Case, dial & movement
Size: 36mm
Accompaniments: Patek Philippe box, quick set tool, Certificate of Origin, Instruction manual