Patek Philippe Deck Chronometer

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.

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.