Introduction

5373P
- Grand Complications
Manual winding

As the first left-hander chronograph in Patek Philippe’s recent history, the new Ref. 5373P-001 stands out with the unusual arrangement of the pushers and displays.

Its platinum case is endowed with the caliber CHR-27-525 PS Q, the thinnest split-seconds chronograph movement with perpetual calendar ever built. It is crafted to venerable traditions. The charcoal-colored dial with a black gradation and red varnished chronograph hands reflects a sporty and contemporary style echoed on the strap.

It is a highly exclusive timepiece crafted in small series for left-handers and connoisseurs of choice rarities.

Watch
Mechanical manually wound movement. Caliber CHR 27‑525 PS Q. Split-seconds monopusher chronograph. 60-minute counter. Perpetual Calendar. Day, month, leap year and day/night indication displayed in apertures. Date indicated by hand. Moon phases. Small seconds.
Dial
Charcoal gray with black-gradient rim, vertical satin finish, gold applied numerals. 18K gold dial plate.
Case
Platinum. Diameter: 38.3 mm. Height: 12.93 mm. Water-resistant to 30 m. Interchangeable solid and sapphire crystal case backs.
Strap
Black calfskin, embossed with fabric pattern. Fold-over clasp.
Price :

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Caliber

CHR 27-525 PS Q
Manual winding

Patek Philippe Caliber CHR 27-525 PS Q - Front
Front Back

CHR 27-525 PS Q
Manual winding

Split-seconds monopusher chronograph. 60-minute counter. Perpetual calendar. Day, month, leap year and day/night indication displayed in apertures. Date indicated by hand. Moon phases. Small seconds. Diameter: 27.3 mm. Thickness: 7.3 mm. Number of parts: 476. Bridges: 12. Jewels: 31. Power reserve with the chronograph disengaged: min. 38 hours - max. 48 hours. Balance: Gyromax®. Vibrations/hour: 21 600 (3 Hz). Balance spring: Breguet. Hallmark: Patek Philippe Seal.

Patek Philippe Seal

Settings

How to set the moonphase indicator?

Month
Day
Year
Calculate
Reset
Calculate
Reset
fullmoon calendar
fullmoon calendar
fullmoon calendar
fullmoon calendar
fullmoon calendar
fullmoon calendar
fullmoon calendar
A disc, decorated with golden stars and two golden moons against a blue or white background representing the sky, rotates within an aperture. The disc is cut from a wafer of corundum crystal (sapphire).

Gold was condensed onto the disc by means of a vacuum process through a photographic mask to create the shape of the moons and stars.  The aperture is cut at its upper edge in order to represent the lunar cycle.

During the first days of each lunation, the leading edge of a golden moon becomes visible as a crescent on the left of the aperture and appears to wax as it emerges beyond the curved edge of the aperture representing the lunar terminator.

Half way through the lunation, the moon appears full. It then wanes as it disappears behind the terminator on the right of the aperture.

As the moon vanishes, the second moon on the disc is ready to appear on the left.

How to set the leap year indicator

The leap year indicator informs you about the year cycle: leap year or non leap year. Leap years are identified with the Roman numeral IV or the Arabic numeral 4.
Please select a year and press "Calculate" to find the year cycle.
Year
Calculate
Reset
2017
Year I
2018
Year II
2019
Year III
2020
Year IV
2021
Year I
2022
Year II
2023
Year III
2024
Year IV
2025
Year I
2026
Year II
2027
Year III
2028
Year IV

Other models

5204G-001
White Gold
5370P-011
Platinum

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