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The Encyclopedia of Horology

Pocket watch · Open-face pocket watch

Patek Philippe Platinum and Diamond Set Open Face Pocket Watch

Partially verified

According to the auction catalog, this open face pocket watch by Patek Philippe was manufactured in 1930 and purchased on November 17, 1932. The piece features a round platinum case measuring 44 mm across, distinguished by a diamond-set band and bow with a snap-on back. Its brushed silvered dial displays applied platinum Breguet numerals, an outer minute track, polished Breguet-style hands, and a subsidiary seconds subdial at 6 o'clock. Bonhams records the internal mechanism as an 18-jewel manual-wind Swiss lever movement, numbered 824604, incorporating wolf's tooth winding, a cut and compensated bimetallic balance, and adjustment to five positions, heat, cold, and isochronism.

Three-quarter dial view of the Patek Philippe platinum pocket watch showing diamond-set band and bow
Three-quarter dial view of the Patek Philippe platinum pocket watch showing diamond-set band and bow — Bonhams. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.bonhams.com
Category
Pocket watch · Open-face pocket watch
Maker / attribution
Patek Philippe
Reference
Not recorded
Catalogue / lot identifier
216
Source-reported date
Manufactured in 1930, Purchased 17th November 1932
Source-reported place
Switzerland
Source-reported serial
824604

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 External Construction

This open-face pocket watch features a round, polished platinum case measuring 44mm. The watch is noted for its diamond-set band and bow.

The case back is of a snap-on design. The item is identified by case number 416617.

Evidence for this section
  • “Case: Polished round, snap on back, diamond set band and bow, No.416617”
  • “Size: 44mm”

Dial and Visual Features

The brushed silvered dial features applied platinum Breguet-style numeral hour markers and polished hands. A sunken subsidiary seconds dial is positioned at the 6 o'clock mark.

The dial is signed below the 12 o'clock position: 'PATEK PHILIPPE & C / GENEVA SWITZERLAND'.

Evidence for this section
  • “Dial: Brushed silvered, applied platinum Breguet numeral hour markers, outer minute division, subsidiary seconds at 6, polished hands”
  • “Dial signed below 12 o'clock: 'PATEK PHILIPPE & C / GENEVA SWITZERLAND'.”

Mechanical Specification

The timepiece is powered by an 18-jewel manual-wind Swiss lever movement, cited as number 824604. Reported mechanical features include wolf's tooth winding and a cut and compensated bimetallic balance.

The movement is stated to be adjusted to five positions, heat, cold, and isochronism.

Evidence for this section
  • “Movement: 18-jewel Swiss lever, cut and compensated bi-metallic balance, wolfs tooth winding, adjusted to 5 positions, heat, cold & isochronism, No.824604”

Open research questions

  • What specific type or grade of diamonds are set within the case band and bow?
  • Does the 'Extract from the Archive' contain specific details regarding the original point of sale?
  • Are there visible hallmarks on the case that correspond to the platinum material?

Source evidence

Recorded claims and source quotations for Patek Philippe Platinum and Diamond Set Open Face Pocket Watch
FieldSource-reported valueSource quotation
Movement Number824604“No.824604”
Case Number416617“No.416617”
Movement Details18-jewel Swiss lever, cut and compensated bi-metallic balance, wolfs tooth winding, adjusted to 5 positions, heat, cold & isochronism“18-jewel Swiss lever, cut and compensated bi-metallic balance, wolfs tooth winding, adjusted to 5 positions, heat, cold & isochronism”
Case Dimensions44mm“Size: 44mm”
AccompanimentsExtract from the Archive“Accompaniments: Extract from the Archive”

Visible details

  • White metal open-face pocket watch shown at an oblique angle against a marble-patterned surface.
  • A continuous row of small round stones (described as diamonds) is set along the case band and the bow.
  • The dial shows Breguet-style open-tipped hands and applied Arabic numerals.
  • Sunken subsidiary seconds dial with railway minute or second track positioned above 6 o'clock.
  • Dial signed below 12 o'clock: 'PATEK PHILIPPE & C / GENEVA SWITZERLAND'.

Research qualifications

  • The movement and inner case back are not visible in the photograph; technical specifications and serial numbers are reported by the auction house.

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

Consulted source

Bonhams : PATEK PHILIPPE. MONTRE DE GOUSSET A CADRAN OUVERT EN PLATINE SERTIE DE DIAMANTS REMONTAGE MANUEL PATEK PHILIPPE. A FINE PLATINUM AND DIAMOND SET KEYLESS WIND OPEN FACE POCKET WATCH Manufactured in 1930, Purchased 17th November 1932

Reviewed 2026-10-22 · Record 6b050c1e21

Terms in this record

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

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