Zenith ChronoMaster El Primero Chronomètre
Record status
Individual type · partial
Period
circa 2000
Maker / issuer
ZenithThis Zenith ChronoMaster El Primero is a self-winding, stainless steel wristwatch featuring a square-button chronograph mechanism, date registers, and moon phase indication.
Produced circa 2000, the watch is equipped with an integrated chronograph caliber, 410Z, which oscillates within a 40 mm diameter polished case featuring a stepped bezel and lugs. The case construction incorporates a transparent back secured by six screws, revealing the rhodium-plated movement finished with oeil-de-perdrix decoration. The dial is satiné silver, characterized by applied steel radial Roman numerals and subsidiary guilloché registers for seconds, 12-hour, and 30-minute timing.
An outer tachometer graduation surrounds the dial, complemented by apertures displaying the day of the week, date, month, and moon phase. The timepiece is fitted with steel dauphine hands and a Zenith deployant clasp, and it is accompanied by its fitted box 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
- Date
- circa 2000
- Type
- Chronograph
- Maker
- Zenith
- Caliber
- 410Z
- Case Diameter
- 40 mm
- Case Material
- Stainless steel
- Case Thickness
- 13 mm
- Place recorded
- Switzerland
- Movement Features
- 31 jewels
- Maker / attribution
- Zenith
Design
- Case and Dial
- The timepiece features a polished stainless steel case with a diameter of 40 mm and a thickness of 13 mm. The design includes a stepped bezel and lugs, providing a distinct silhouette. A transparent case back, secured by six screws, permits viewing of the internal mechanism. The dial is executed in a satiné silver finish and features applied steel radial Roman numerals. Three subsidiary guilloché dials provide functions for seconds, 12-hour, and 30-minute registration. The dial layout also includes an outer tachometer graduation and windows for the day, date, month, and moon phase, with time indicated by steel dauphine hands.
- Visible features
- • Satiné silver dial with applied radial Roman numerals. • Three subsidiary dials featuring guilloché patterns. • Transparent exhibition case back secured by six screws. • Square chronograph pushers located on the right side of the case.
- Movement and Escapement
- The watch is powered by the Zenith Caliber 410Z. This is a self-winding movement that incorporates a chronograph mechanism. The caliber is finished with rhodium plating and oeil-de-perdrix decoration, comprising 31 jewels. The escapement is of the straight-line lever type, paired with a monometallic balance and a shock-absorber system. A self-compensating flat balance spring regulates the movement. The auction report notes that the movement requires an overhaul.
- Signatures and Components
- The Zenith manufacture marks are applied across the primary components of the watch, specifically the dial, the case, and the internal movement. The watch includes a Zenith deployant clasp. The lot is provided with original secondary components including a fitted box and a certificate, as indicated in the auction documentation.
Identification
- 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 auction description explicitly recommends an overhaul of the movement.
- Research required: The place of manufacture is not explicitly stated in the provided text.