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The Encyclopedia of Horology

Wristwatch · Split-seconds chronograph wristwatch

Patek Philippe Reference 5370 Split-Seconds Chronograph

Partially verified

The Patek Philippe Reference 5370 is a split-seconds chronograph wristwatch housed in a 41 mm platinum case. Introduced in 2015, the timepiece is defined by a black enamel dial, which features white gold Breguet-style numerals and a perimeter railroad-style minute track enhanced with Superluminova. The watch operates on the mechanical calibre CHR 29-535 PS, a manual-wind movement consisting of 496 components and utilizing two column wheels for its chronograph and split-second operations. The assembly includes 34 jewels. The case features a snap-on sapphire crystal display back that permits observation of the movement mechanics. The watch is presented on a black alligator leather strap that attaches with a platinum folding clasp. The timepiece is reported to bear signatures on the case, the dial, and the movement.

Front-facing view of the Patek Philippe Reference 5370 wristwatch showing the black enamel dial, chronograph sub-dials, and platinum case.
Front-facing view of the Patek Philippe Reference 5370 wristwatch showing the black enamel dial, chronograph sub-dials, and platinum case. — Sotheby's. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
orbiscollectibles.com
Category
Wristwatch · Split-seconds chronograph wristwatch
Maker / attribution
Patek Philippe
Reference
5370
Catalogue / lot identifier
Source URL identifies the listing
Source-reported date
circa 2015
Source-reported place
Not established

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 Dial Design

The watch is constructed with a 41 mm case crafted from platinum. The aesthetic is centered on a black enamel dial, which serves as the base for the timekeeping displays and chronograph scales. The dial is equipped with white gold Breguet numerals that indicate the hours.

An outer railroad-style minute track is applied to the periphery of the dial. This track incorporates Superluminova to assist with readability. The overall architecture is intended to present a combination of enamel finishing and chronograph utility.

Evidence for this section
  • “presented in a 41 mm platinum case”
  • “features a distinct black enamel dial decorated with white gold Breguet numerals”
  • “classic railroad minute track on its outer rim, which is enhanced with Superluminova”

Movement and Technical Specifications

Internal operation is driven by the calibre CHR 29-535 PS. This manual-wind mechanical movement is composed of 496 individual components and operates with 34 jewels. The chronograph system relies on two column wheels to control the functions of the main seconds hand and the split-seconds mechanism.

The movement is visible through a sapphire crystal display back, which is designed as a snap-on component.

Evidence for this section
  • “powered by the mechanical calibre CHR 29-535 PS”
  • “comprising 496 components and incorporating two column wheels”
  • “fitted with a snap-on sapphire crystal display back”

Signatures and Accompaniments

The watch is identified by signatures found across the case, the dial, and the movement components. These signatures serve as the identifying marks for the reference.

The timepiece is paired with a black alligator leather strap produced by Patek Philippe. The strap is secured to the wrist using a platinum folding clasp.

Evidence for this section
  • “Signed on the case, dial, and movement”
  • “accompanied by a black Patek Philippe alligator strap secured with a platinum folding clasp”

Open research questions

  • What is the specific production serial number for this example?
  • Does the dial enamel undergo any specific heat-treatment process typical of Patek Philippe's reference 5370 production?

Source evidence

Recorded claims and source quotations for Patek Philippe Reference 5370 Split-Seconds Chronograph
FieldSource-reported valueSource quotation
MakerPatek Philippe“Patek Philippe Reference 5370”
Case materialPlatinum“41 mm platinum case”
MovementCalibre CHR 29-535 PS“mechanical calibre CHR 29-535 PS”
Component count496“comprising 496 components”
Dial featuresRailroad minute track“classic railroad minute track on its outer rim”
StrapBlack alligator“black Patek Philippe alligator strap”

Visible details

  • Black enamel dial with white gold Breguet numerals
  • Dual chronograph pushers and a crown-integrated button
  • Railroad-style minute track on the outer dial periphery
  • Visible tachymeter scale printed on the dial

Research qualifications

  • The source attributes the watch to circa 2015 but does not provide a specific serial number
  • The provenance of this individual example is not detailed in the source

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

Consulted source

Patek Philippe Reference 5370 platinum split seconds chronograph wristwatch with black enamel dial

Reviewed 2026-11-02 · Record 5984031940

Terms in this record

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

Other split-seconds chronograph wristwatch records