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Patek Philippe Naviquartz III Electronic Chronometer

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

1976

This Patek Philippe Naviquartz III, numbered 1800374 and identified as model 1215 B, was sold on July 5, 1976. The object functions as an electronic chronometer housed in a mahogany case.

Its design features a tri-tier hinged construction, with the external surfaces and corners reinforced by brass inlays, resembling the configuration of traditional deck watches. The base includes a folding brass isle. The white dial displays Roman numerals, an outer minute track, and black Breguet-style hands. Two apertures are located on the dial plate below the center: the right aperture functions with a pushbutton to activate the power reserve indication, while the left aperture serves as the indicator itself.

The movement is quartz-based and electronic, incorporating a pushbutton to stop the mechanism for precision time setting. The piece is signed on the dial, movement, and case back, and comes with its original invoice and certificate.

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
Marine chronometer
Maker
Patek, Philippe & Cie.
Model
1215 B
Sale Date
July 5, 1976
Dimensions
16 x 12 x 8 cm
Movement Type
Electronic quartz
Serial Number
1800374
Place recorded
Switzerland
Maker / attribution
Patek Philippe & Cie.

Design

Visible features
• Tri-tier mahogany case with brass corner inlays • Dial contains a power reserve indicator and a test pushbutton • Movement includes a secondary pushbutton for stop-seconds feature • Case measures 16 x 12 x 8 cm
Case Construction
The object is housed in a mahogany case characterized by a tri-tier, hinged construction. Reflecting the style of historical deck chronometers, the exterior corners and sides are reinforced with brass inlays, providing structural protection and visual detail. The base of the mahogany box incorporates a folding brass isle, a functional addition for desk or maritime use. The interior reveals a metallic plate upon which the dial and controls are mounted, The overall dimensions of the housing are recorded as 16 x 12 x 8 centimeters.
Dial and Control Interface
The white dial is marked with bold Roman numerals and an outer minute track. Time is indicated by black Breguet-style hands. The dial plate extends below the central display, where two circular apertures are integrated into the brass plate. Functionally, the instrument provides information regarding battery power reserve. A pushbutton located to the right activates the power reserve indication, which is then displayed in the aperture to the left. These controls are integrated into the dial plate, creating a streamlined interface for the user.
Movement and Functionality
The timepiece is driven by an electronic quartz movement. The system includes a stop-seconds feature, which allows the user to halt the seconds hand via a dedicated pushbutton, facilitating precision time synchronization. The electronic nature of the movement necessitates battery power, which is monitored by the integrated reserve indicator system described above. The object bears signatures on the dial, the case back, and the movement itself. The instrument was officially sold in 1976 and is accompanied by its original documentation, including the invoice and certificate.

Identification

Reference
1215 B
Serial number
1800374
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 source does not specify the battery type required for the electronic movement
  • Research required: The specific date of manufacture is not stated, only the July 5, 1976 sale date
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