Patek Philippe 5373P-001

Split-Seconds Monopusher Chronograph, Perpetual Calendar

Wednesday, 4 January 2023

Crown at nine. Pushers inverted. Dial rotated 180 degrees. The 5373P is Patek Philippe's first chronograph for left-handers in its modern history — and it's not a token gesture, it's a split-seconds monopusher chronograph with perpetual calendar, powered by the Cal. CHR 27-525 PS Q, the thinnest movement of its type ever built. The charcoal grey dial with red chronograph hands gives it a sportier, more contemporary feel than the blue-dialled 5372P it mirrors. Produced in very small numbers.

Collector's Note

This is not the same watch as the 5372P in a different colour. The 5373P uses a different, thinner caliber (CHR 27-525 PS Q vs. the 5372's CHR 29-535 PS Q), and the entire movement has been rebuilt for left-hand operation. Having both the 5372P and 5373P means owning two different calibers, two different orientations, and two of the most technically demanding chronograph perpetual calendars in the Patek catalogue. That's not redundancy — it's completism at a level that very few collections anywhere can match.

Watch

Platinum case.
Water-resistant to 30m.
Size/Height: Ø38.3m / 12.93mm
Charcoal gray with black-gradient rim dial.
Black calfskin, embossed with fabric pattern strap.

Movement

Manual-winding Caliber CHR 27-525 PS Q.
Split-Seconds Monopusher Chronograph, Perpetual Calendar, 60-minute counter, Moon phases, Seconds subdial.
Dimensions/Height: Ø27.3mm / 7.3mm
Parts/Bridges/Jewels: 476 / 12 / 31
Power Reserve: 38 - 48 hours
Semi-oscillations/hour: 21600 (3Hz)

Related Timepieces

Patek Philippe 5372P-010

Patek Philippe 5950/1A-012