Breitling Cosmonaute Navitimer 24h Ref. 809.4
Record status
Individual type · partial
Period
1970s
Maker / issuer
BreitlingThis Breitling Cosmonaute Navitimer 24h, reference 809.4, dates to the 1970s and is characterized by a 41.5 mm gold-plated and stainless steel case. The timepiece features a distinctive 24-hour dial layout with luminous Arabic numerals and indices, accompanied by three silver-toned guilloché registers for the chronograph functions.
The movement is a manual-wind Caliber 178 with 17 jewels, a straight-line lever escapement, and a monometallic balance. Designed for aviation utility, the watch incorporates a telemeter scale and a bidirectional revolving reeded bezel that operates an outer slide-rule scale. The watch is presented with a period Breitling presentation case, a factory case-back sticker, and issue number 37 of International Wristwatch magazine.
It is reported to be in a preserved, original condition. The watch is signed on the dial, case, and movement.
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
- Chronograph wristwatch
- Maker
- Breitling, Genève
- Movement
- Cal. 178
- Condition
- Reported as new/old stock
- Reference
- 809.4
- Case Diameter
- 41.5 mm
- Dial Features
- 24-hour dial with three guilloché registers
- Serial Number
- 1164037
- Place recorded
- Switzerland
- Maker / attribution
- Breitling
Design
- Visible features
- • Bi-directional revolving reeded bezel • Triple register chronograph layout • 24-hour hour markers on the dial • Gold-plated case with stainless steel case-back
- Case and Dial Construction
- The timepiece features a three-body case measuring 41.5 mm in diameter and 13 mm in thickness. The construction utilizes a combination of gold-plated material for the main body and a stainless steel case-back. A bi-directional revolving reeded bezel is integrated into the design to facilitate the use of the slide-rule functions. The dial displays a two-tone black and silver color scheme. It incorporates luminous Arabic numerals and indices configured for a 24-hour readout. Three subsidiary registers provide chronograph timing, while the outer periphery of the dial features a telemeter scale and a silver scale for the slide-rule calculation. The hands are gilt and luminous.
- Provenance and Included Accessories
- The watch is accompanied by several auxiliary items, including a period-appropriate Breitling presentation case and a factory-supplied case-back sticker. Additionally, the lot includes issue number 37 of International Wristwatch magazine. According to the auction documentation, the watch is referenced in an article within the 1998 edition of the mentioned magazine.
- Movement and Technical Specifications
- The watch is powered by a Caliber 178 movement, finished in a copper color. This mechanical movement employs 17 jewels and uses a straight-line lever escapement. The balance assembly is monometallic and incorporates a shock absorber system and a blued steel flat balance spring. The chronograph functionality is operated via round push-buttons. The movement, dial, and case are all signed by the maker. The auction description includes a report on the current condition of these components, indicating a recommendation for an overhaul.
Identification
- Reference
- 809.4
- Serial number
- 1164037
- 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: Overhaul status is unverified as the auction description recommends service
- Research required: Exact provenance of the magazine article is based on auction claims