Patek Philippe Deck Chronometer
Record status
Individual type · partial
Period
1921
Maker / issuer
Patek PhilippeThis manual-wind open-face deck chronometer by Patek Philippe is cased in silver and features a matte silver dial with painted Roman numerals, an outer minute track, a subsidiary seconds dial, and blued steel spade hands.
The dial includes a 36-hour power reserve indicator positioned at 12 o'clock. The timepiece is powered by an extra-quality, 20-jewel movement with a straight-line calibrated lever escapement, a Guillaume balance featuring winged arms, and platinum mean time screws. Additional movement features include a special alloy Breguet balance spring, diamond endstone, and a swan-neck micrometric regulator. The movement is gilt-finished and marked with the Seal of Geneva quality mark.
The object measures 62 mm in diameter. Provenance is supported by an extract from the archives, a Beyer certificate, and a copy of the original Geneva Observatory timing certificate indicating a first-class result.
Evidence at a glance
- Linked sources
- 1
- Photograph views
- 1
- Catalogue references
- 0
Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.
Technical characteristics
- Type
- Deck chronometer
- Maker
- Patek Philippe
- Diameter
- 62 mm
- Case Number
- 600734
- Jewel Count
- 20 jewels
- Dial Designer
- Stern
- Place recorded
- Switzerland
- Movement Number
- 178455
- Maker / attribution
- Patek Philippe
- Year of Manufacture
- 1921
Design
- Visible features
- • Matte silver dial with 36-hour power reserve indicator at 12 o'clock • Gilt-finished movement with visible 'EXTRA' engraving • Blued steel spade hands • PPC stamp on the bow
- Movement Construction
- The watch is equipped with an 'extra' quality, 20-jewel, manual-wind movement measuring 47 mm. It features a straight-line calibrated lever escapement and an anibal-brass Guillaume balance with winged arms. The balance assembly utilizes gold temperature adjustment screws and platinum mean time screws. Precision timekeeping is managed by a special alloy Breguet balance spring with both inner and outer terminal curves, complemented by a swan-neck micrometric regulator and a diamond endstone. The movement is gilt-finished and bears the Seal of Geneva quality mark twice.
- Documentation and History
- This deck chronometer is accompanied by a collection of documentation confirming its provenance and performance history. This includes a Patek Philippe extract from the archives, which confirms the watch achieved a first-class result in the Geneva Observatory timing contests. Additional verification is provided by certificates from Beyer Chronométrie, which confirm the originality of the watch and document that the movement was serviced at the Beyer atelier. The watch was originally manufactured in 1921 and was subsequently sold in 1938.
- Dial and Case Configuration
- The timepiece is housed in a large silver open-face case measuring 62 mm in diameter. The dial is finished in matte silver and features painted Roman numerals with an outer minute track. The primary hands are blued steel in a spade style. A subsidiary seconds dial is positioned at the 6 o'clock mark, while a 36-hour power reserve indicator is located at the 12 o'clock position. The bow of the case is marked with a PPC stamp, identifying the manufacturer's hallmark. The auction description reports the condition of the case as very good, noting slight oxidation. The dial is classified as being in very good condition.
Identification
- Serial number
- 600734
- Source note
- Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.
Catalogue references
No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.
Research required
- Research required: The auction description mentions the silver and gilt finish combination is unusual
- Research required: The watch was manufactured in 1921 but sold in 1938