Reference: 3970Date: Sold 26th July 1991Movement: 24-jewel Cal.27-70 manual wind, adjusted to heat, cold, isochronism and 8 positions, freesprung Gyromax balance, stamped with the Seal of Geneva, No.875.893Dial: 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 handCase: Brushed and polished round, screw down exhibition back, round chronograph pushers, quick set buttons at 6, 10 and 12, down-turned lugsBuckle/Clasp: Signed 18K rose gold buckleSigned: Case, dial & movementSize: 36mm Accompaniments: Patek Philippe box, quick set tool, Certificate of Origin, Instruction manual