2007 Marathon CSAR Military Chronograph
Record status
Individual type · partial
Period
2007
, handmade in La Chaux-de-Fonds, Switzerland. The watch is constructed from 316L surgical-grade stainless steel with a 42mm case diameter and is water-resistant to 30 ATM (300 meters).
It is powered by a Swiss-made, 25-jewel Valjoux ETA 7750 automatic chronograph movement. The dial displays 12-hour and 24-hour time, day and date, with dual-graduated chronograph timing (1/5 second and 1/100 minute decimal). Illumination is provided by encapsulated tritium gas tubes on the hour markers and main hands, supplemented by MaraGlo photo-luminescent paint on the bezel and sub-register indexes. The watch is fitted with an original stainless steel bracelet featuring an oyster-style flip-lock clasp stamped with the U.S.
Seal.
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
- Military chronograph
- Maker
- Marathon
- Movement
- ETA 7750
- Reference
- CSAR
- Illumination
- Tritium gas tubes and MaraGlo paint
- Case Material
- 316L Stainless Steel
- Serial Number
- 0109
- Place recorded
- Switzerland
- Water Resistance
- 30 ATM
- Maker / attribution
- Marathon
Design
- Visible features
- • Case features a bead-blasted finish • Dial includes day-date complication • Movement is an automatic chronograph • Bezel is uni-directional rotating
- Provenance and Condition
- The watch was handmade in La Chaux-de-Fonds, Switzerland. The auction description reports that the watch is in original condition, with the case displaying the original factory bead-blasted finish and sharp lines. The watch is supplied with an original oyster-style flip-lock bracelet featuring the U.S. Seal on the clasp. The watch is reported to be keeping time at factory specifications, though the extended service history is unknown.
- Case and Dial Construction
- The 42mm case is manufactured from 316L surgical-grade stainless steel and utilizes a bead-blasted finish. The watch is water-resistant to a depth of 30 ATM (300 meters). The crystal is composed of synthetic sapphire for scratch resistance. The bezel is original to the timepiece and features a 12-hour marking coated in MaraGlo photo-luminescent paint. The dial displays both 12-hour and 24-hour time formats, alongside day and date windows. Chronograph functionality is presented with dual-graduation scales, providing 1/5 second measurements and 1/100 minute decimal timing on the inner ring. The chronograph registers measure up to 30 minutes and 12 hours. Dial indices and main hands are equipped with encapsulated tritium (Isotope H3) gas tubes for illumination.
- Movement and Functionality
- The timepiece is powered by an automatic chronograph movement, specifically the Swiss-made, 25-jewel Valjoux ETA 7750. The movement facilitates the central sweep seconds hand, which tracks 1/5-second intervals, as well as the subsidiary registers. The watch is designed for search and rescue operations, aviation, and diving. It utilizes tritium gas tubes for low-light legibility, which operate as self-contained light sources and do not require external light charging. The activity level of the tritium is stated to be between 28-30 millicuries.
Identification
- Reference
- CSAR
- Serial number
- 0109
- 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: Extended service history is unknown
- Research required: The auction description reports the bezel shows some wear