Chronoswiss Lunar 'Alfred Rochat & Fils' Chronograph Wristwatch, Ref. 77.890
Record status
Individual type · partial
Period
circa 1990
This Chronoswiss men's chronograph wristwatch from the Lunar 'Alfred Rochat & Fils' series dates to circa 1990 under reference 77.890. It features a polished steel case measuring 37 mm in diameter and 14 mm in thickness, fitted with a domed Plexiglas crystal and screw-down caseback.
The silver-tone guilloché dial displays black Arabic numerals, a moon phase aperture at 3 o'clock, small seconds at 9 o'clock, a 30-minute register at 12 o'clock, a 12-hour register at 6 o'clock, and an outer date track indicated by a crescent hand. Powered by an automatic movement based on the ETA 7750, it is paired with a green leather strap.
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 1990
- Type
- Chronograph
- Diameter
- 37 mm
- Reference
- 77.890
- Case material
- Polished steel
- Complications
- Circumferential date and moon phase
- Movement base
- ETA 7750
- Dial description
- Silver-tone guilloché dial
- Maker / attribution
- Chronoswiss
Design
- Visible features
- • Silvered textured dial with four sub-dials/apertures and black Breguet-style Arabic numerals. • Prominent teardrop or horn-shaped lugs securing a dark green textured leather strap. • Crescent-tipped red pointer hand extending to an outer date scale running 1 to 31.
- Dial and Complications
- The dial is a silver-tone guilloché design featuring black Arabic numerals and blued hands. Complications include a moon phase aperture positioned at 3 o'clock and a circumferential date indicated by a pointer. The chronograph layout includes a small seconds display at 9 o'clock, a 30-minute register at 12 o'clock, and a 12-hour register at 6 o'clock. A central seconds hand with a stop-function is also noted.
- Mechanical Status and Liability
- The watch is powered by an automatic movement based on the ETA 7750, which includes a fine adjustment mechanism. The auction house reported the watch was running at the time of their inspection. Prospective bidders are advised that the auction house provides no warranty regarding the function, completeness, or mobility of mechanical equipment, and descriptions of operational status reflect subjective opinion rather than guarantees.
- Object Identity and Construction
- This timepiece is listed as a Chronoswiss men's chronograph, identified as part of the 'Alfred Rochat & Fils' series, reference 77.890. The case is described as polished steel with a screw-down caseback and a domed Plexiglas crystal. The case measures 37 mm in diameter and 14 mm in thickness. The watch is presented with a green leather strap featuring a pin buckle, with a total length stated as approximately 21 cm.
Identification
- Reference
- 77.890
- 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 is not visible in the provided photographs.
- Research required: Country of manufacture is not explicitly stated in the catalog text.
- Research required: Operational status and timekeeping accuracy cannot be verified from static images.