Patek Philippe, Vintage Calatrava, Ref. 3445J
Specifications
WATCH DETAILS
Brand: Patek Philippe
Model: Calatrava
Reference Number: 3445J
Movement: Automatic
Gender: Mens
Condition: Good (worn with little signs of wear)
Time Period: 1963
Box & Papers: ( No box ) Extract from Patek Philippe Archives
THE CALIBER
Caliber: 27-460M
Jewels: 37
THE CASE
Case Material: 18K yellow gold
Case Diameter: 35 mm
Thickness: 10 mm
Waterproof:
Bezel Material: Fixed 18K yellow gold
Glass: Acrylic (apparent scratches on the glass - can be refurbished upon request)
Caseback: Solid
Dial: Champagne with radial brushing
Dial Numerals: Yellow gold applied baton hour indices, outer perlé minute track around the outer rim
THE BRACELET/STRAP
Bracelet Material: Blue Leather
Buckle: Tang
Buckle Material: Gold plated
THE FUNCTIONS
Hours, minutes, guichet date at three o’clock, subsidiary seconds dial at 6 o'clock
OTHERS
Yellow gold applied stick-shaped hour/minute hands small second hand
Solid two-body round case and bezel are polished/brushed, excellent condition
Solid 18K yellow gold screw-down case back
Sharp straight 18K yellow gold angled lugs with a crisp and visible hallmark in the back
18k yellow gold pull/push recessed knurled crown with Calatrava cross engraved
The caliber 27-460 is stamped with the Geneva Quality hallmark, and it has the Patek Philippe seal. It's rhodium-plated, with fausses cotes embellishment, a shock absorber device, and a straight-line lever escapement. It includes a self-adjustable balance spring stud carrier, an adjustable-mass balance with a Breguet overcoil spring, and a Gyromax balance that's adjusted for heat, cold, isochronism, and 5 positions, and a centrally mounted solid 18K yellow gold rotor, consummately decorated with the engine turning.
This mechanism oscillates at the frequency of 19,800 vph (3 Hz).
The caliber 27-460 M, the successor of the caliber 12-600 AT, was the first automatic watch movement with a date produced by Patek Philippe in a series in production for 25 years, from 1960 to 1985.
This caliber 27-460M offers the same exquisite finishing as the 12-600 AT movement in the ref. 2526.
Walt Odets called Cal. 27-460 "the reigning queen of that half-century" and "the most elaborate and costly simple automatic watch movement ever produced."
Caliber 27-460 M was also called "La Grande Dame des automatiques Suisse"
Incomplete (no box, with an extract from the Patek Philippe Archives, dated 1963)
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