Breguet 18K Yellow Gold Chronograph No. B340
Record status
Individual type · partial
Period
circa 1940
Maker / issuer
BreguetThis Breguet wristwatch, identified as No. B340, is an 18K yellow gold chronograph produced circa 1940. The piece features a three-body case design with a polished finish, characterized by a curved bezel and concave lugs.
The brushed silver dial is adorned with applied yellow gold Arabic numerals and dot indexes. It tracks time using central hours and minutes with yellow gold baton hands, while incorporating an outer minute and fifths-of-a-second track, an outermost tachometer scale, and two subsidiary dials for constant seconds and a 30-minute register. The movement is the rhodium-plated 13-ligne Caliber 340, which employs a straight-line lever escapement, a monometallic balance, and a self-compensating blued steel balance spring.
The overall diameter of the watch is 35 mm, with a case thickness of 12 mm. The auction description notes the presence of original hands and specifies the dial is signed.
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
- Square-button chronograph
- Hands
- Original
- Maker
- Breguet
- Diameter
- 35 mm
- Movement
- Caliber 340
- Thickness
- 12 mm
- Case Material
- 18K yellow gold
- Serial Number
- B340
- Dial Description
- Brushed silver
- Maker / attribution
- Breguet
Design
- Visible features
- • Case features concave lugs and a polished finish • Dial displays applied gold Arabic numerals and dot markers • Two subsidiary dials for chronograph register and constant seconds
- Case and Dial Design
- The watch is housed in an 18K yellow gold three-body case. The exterior features a polished finish, complemented by a curved bezel and concave lugs, which provide the profile for the 35 mm diameter housing. The case measures 12 mm in thickness. The dial is finished in a brushed silver tone, accented by applied yellow gold Arabic numerals and dot indices. For timing functions, the dial includes outer minute and fifths-of-a-second markings, alongside an outermost tachometer graduation. Two subsidiary dials are integrated at the register positions for the seconds and the 30-minute chronograph counter, accompanied by yellow gold baton hands. The auction description reports the dial is signed.
- Movement Specifications
- The watch is powered by the Caliber 340, a movement measuring 13 lignes in diameter. It is constructed with rhodium plating and utilizes a straight-line lever escapement. The timing regulation is managed by a monometallic balance paired with a self-compensating blued steel balance spring. An index regulator is included within the movement structure.
- Condition and Attribution
- The object is attributed to a production date of circa 1940. The hands are recorded as original to the piece. The case is numbered B340. The auction description provides grading for the individual components of the watch. The overall grade is listed as AA, with the case condition noted as good with scratches, and the dial noted as good with slight oxidation. The movement is similarly rated as good, subject to the recommendation for servicing.
Identification
- Serial number
- B340
- 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: Movement condition is noted as needing overhaul
- Research required: Dial is described as slightly oxidized