- Year
- 2025
- Condition
- Excellent
- Set
- Box and papers
- Case
- Diamond set at 12 o’clock
- Movement
- Manual winding
- Size
- 38.3 mm
Set and condition
Complete set
This Grand Complications Split-seconds Monopusher Chronograph for Left-handers, Perpetual Calendar is accompanied by its original presentation box, warranty card and supporting documentation. The watch and included items are inspected by an expert watchmaker before sale. Additional photographs and video of this piece are available on request.
Original presentation box
Original presentation box and packaging.
Original papers
Warranty card and supporting documentation.
Inspected prior to sale
Reviewed for condition, completeness and functionality. Additional details and photographs are available on request.
Condition photography
Additional close-up images of specific areas are available before purchase.
Overview
The split-seconds perpetual, turned for the left wrist
The Patek Philippe Grand Complications Split-seconds Monopusher Chronograph for Left-handers, Perpetual Calendar, reference 5373P-001, in platinum with the crown at 9 o'clock, a charcoal grey vertical-satin dial with black-gradient rim and red chronograph hands, on a black calfskin strap with red stitching. Manually wound calibre CHR 27-525 PS Q; 38.3 mm, 12.93 mm high.
The reference 5373P-001 is Patek Philippe's split-seconds monopusher chronograph with perpetual calendar built for left-handers: the brand describes it as the reference 5372 with crown, pushers and displays inverted, produced in a small series. The crown sits at 9 o'clock and the split-seconds pusher at 8 o'clock, in a platinum case 38.3 mm across and 12.93 mm high with a polished concave bezel, recessed satin-finished flanks and a diamond set at 12 o'clock. The dial is charcoal grey with a vertical satin finish and a black-gradient rim, with applied numerals and faceted hands in white gold, red varnished chronograph hands and ebony black snailed counters.
The calibre CHR 27-525 PS Q is 7.3 mm high, which Patek Philippe states makes it the thinnest split-seconds chronograph with perpetual calendar the brand has produced. It is wound by hand and runs at 21,600 semi-oscillations an hour on a Breguet balance spring, with 476 parts and 31 jewels across 27.3 mm, and a power reserve of 38 to 48 hours with the chronograph disengaged. The chronograph is a split-seconds monopusher with a 60-minute counter and small seconds; the calendar shows the day, month, leap year and day/night indication in apertures, the date by hand, and the moon phases. It carries the Patek Philippe Seal.
For collectors
Two things mark it out: the inversion for the left wrist — crown at 9 o'clock, split pusher at 8 o'clock, the displays mirrored from the 5372 — and the movement's height, 7.3 mm, which the brand states is the thinnest of its split-seconds perpetual calendar chronographs. Patek Philippe adds that it is produced in a small series.
Key details
Design and engineering
- Built for left-handersCrown at 9 o'clock and the split-seconds pusher at 8 o'clock; Patek Philippe describes the watch as produced in a small series.
- CasePlatinum, 38.3 mm across and 12.93 mm high, with a polished concave bezel, recessed satin-finished flanks and a diamond set at 12 o'clock; the split-seconds pusher contrasts polished and satin finishes. Interchangeable solid and sapphire crystal case backs, water-resistant to 30 m.
- DialCharcoal grey with a vertical satin finish and a black-gradient rim on an 18K gold plate; applied numerals and faceted dauphine-style hour and minute hands in white gold, red varnished chronograph hands, ebony black snailed counters.
- Thinnest of its kindThe calibre CHR 27-525 PS Q is 7.3 mm high, which Patek Philippe states is the thinnest split-seconds chronograph with perpetual calendar the brand has produced.
- Strap and claspBlack calfskin embossed with a fabric pattern and contrasting red stitching, closed by a platinum fold-over clasp.
Calibre CHR 27-525 PS Q
- Manual winding
- Split-seconds monopusher chronograph for left-handers: 60-minute counter, small seconds
- Perpetual calendar: day, month, leap year and day/night indication in apertures; date by hand; moon phases
- 27.3 mm across, 7.3 mm high; 476 parts, 31 jewels
- 21,600 semi-oscillations per hour (3 Hz), Breguet balance spring
- Power reserve 38 to 48 hours with the chronograph disengaged
- Patek Philippe Seal
The reference
Technical specifications
| Reference | 5373P-001 |
|---|---|
| Collection | Grand Complications |
| Calibre | Caliber CHR 27-525 PS Q |
| Movement | Manual winding |
| Functions | Split-seconds monopusher chronograph for left-handers, 60-minute counter, Perpetual calendar, Day, month, leap year and day/night indication in apertures, Date by hand, Moon phases, Small seconds |
| Case dimensions | 38.3 mm |
| Case thickness | 12.93 mm |
| Case material | Platinum |
| Case | Diamond set at 12 o’clock |
| Case back | Sapphire crystal case back |
| Water resistance | 30 m |
| Dial | Charcoal gray with black-gradient rim, vertical satin finish, white gold applied numerals |
| Strap | Calfskin, fabric pattern, black |
| Clasp | Platinum fold-over clasp |
| Jewels | 31 |
| Power reserve | min. 38 hours – max. 48 hours |
| Frequency | 21,600 semi-oscillations/hour (3 Hz) |
Buying with HYPA
Purchase with confidence
- Original warranty card included, dated 2025
- Free insured delivery within Australia and Hong Kong · elsewhere quoted
- Payment by bank transfer
- Registered Australian dealerHYPA International Pty Ltd · Registered Victorian second-hand dealer, Registration No. SHD-0018017.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.
- Rated 5.0 on Google · 11 reviewsFrom clients of HYPA International on Google. Read the reviews
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