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The Encyclopedia of Horology

Wristwatch · Annual calendar flyback chronograph wristwatch

Patek Philippe Ref. 59601A-010 Annual Calendar Flyback Chronograph Wristwatch

Partially verified

This Patek Philippe reference 59601A-010 is a stainless steel annual calendar flyback chronograph wristwatch manufactured circa 2018. It features a 40.5 mm stainless steel case fitted with a steel multi-link bracelet, pump pushers, and a fluted winding crown. The black dial presents three calendar apertures along the upper perimeter showing day, date, and month, a power reserve indicator beneath 12 o'clock, and a dual-scale monocounter subdial at 6 o'clock combining hour and minute chronograph totals. The source reports it is powered by the automatic calibre 28-250 IRM QA 24H with 40 jewels.

Front view of the Patek Philippe Ref. 59601A-010 showing black dial, annual calendar apertures, chronograph display, and steel bracelet
Front view of the Patek Philippe Ref. 59601A-010 showing black dial, annual calendar apertures, chronograph display, and steel bracelet — Phillips. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.phillips.com
Category
Wristwatch · Annual calendar flyback chronograph wristwatch
Maker / attribution
Patek Philippe
Reference
59601A-010
Catalogue / lot identifier
133
Source-reported date
Circa 2018
Country
Switzerland
Source-reported serial
7’100’074

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Case and Bracelet Construction

The Patek Philippe reference 59601A-010 features a 40.5 mm stainless steel case. The design includes pump-style chronograph pushers and a fluted winding crown.

The watch is fitted with an integrated stainless steel multi-link bracelet and a steel double deployant clasp. The source indicates that an additional leather strap is included with the watch, though it is not depicted in the provided imagery.

Evidence for this section
  • “Dimensions 40.5mm Diameter”
  • “Material Stainless steel”
  • “Stainless steel Patek Philippe link bracelet, additional Patek Philippe Leather strap”
  • “Philippe stainless steel double deployant clasp”

Dial Configuration

The watch displays a black dial featuring three arc-shaped apertures for the annual calendar, indicating the day, date, and month between the 10 and 2 o'clock positions. A power reserve indicator is positioned beneath the 12 o'clock marker.

The chronograph function utilizes a central red seconds hand and a subdial at 6 o'clock. This subdial features a coaxial design with two scales, housing both the 30-minute and one-hour chronograph counters.

Evidence for this section
  • “Black dial with three arc-shaped aperture displays showing day, date, and month between 10 and 2 o'clock.”
  • “Central red chronograph seconds hand paired with a combined coaxial chronograph counter at 6 o'clock.”
  • “chronograph’s 30-minute and one-hour counters situated coaxially on top of each other”

Movement and Technical Specifications

The timepiece is powered by the automatic calibre 28-250 IRM QA 24H, which contains 40 jewels. The movement provides annual calendar and flyback chronograph functionality.

The watch is associated with movement serial number 7’100’074. The movement and case back are not visible in the provided photographic materials.

Evidence for this section
  • “Calibre Automatic, cal. 28-250 IRM QA 24H, 40 jewels”
  • “Movement No 7’100’074”

Open research questions

  • What specific production timeline characterizes the black dial variant of the 59601A-010?
  • Does the serial 7’100’074 correspond to confirmed production records for 2018?

Source evidence

Recorded claims and source quotations for Patek Philippe Ref. 59601A-010 Annual Calendar Flyback Chronograph Wristwatch
FieldSource-reported valueSource quotation
Reference59601A-010“Reference No 59601A-010”
Movement Number7’100’074“Movement No 7’100’074”
Case Number6’103’576“Case No 6’103’576”
MaterialStainless steel“Material Stainless steel”
CalibreAutomatic, cal. 28-250 IRM QA 24H, 40 jewels“Calibre Automatic, cal. 28-250 IRM QA 24H, 40 jewels”
Dimensions40.5mm Diameter“Dimensions 40.5mm Diameter”
Certificate of OriginFebruary 28, 2018“Accompanied by Patek Philippe Certificate of Origin dated February 28, 2018”

Visible details

  • Black dial with three arc-shaped aperture displays showing day, date, and month between 10 and 2 o'clock.
  • Central red chronograph seconds hand paired with a combined coaxial chronograph counter at 6 o'clock.
  • Integrated multi-link stainless steel bracelet attached to a polished case with round pushers.

Research qualifications

  • Movement and case back are not visible in the presented image.
  • Accessories and additional leather strap cited in cataloguing are not depicted in this view.

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Patek Philippe Racing Pulse

Reviewed 2026-10-22 · Record f24705aa73

Terms in this record

Glossary explanations for terms named in this object’s record.