Skip to content
The Encyclopedia of Horology

Wristwatch · Annual calendar chronograph wristwatch

Zenith El Primero Winsor Annual Calendar Wristwatch

Partially verified

This Zenith El Primero Winsor Annual Calendar wristwatch, reference 03.2070.4054/22.C708, is attributed by the cataloguer to circa the 2010s. The stainless steel case measures 42.00 mm in diameter and is fitted with an adjustable black leather strap. The blue dial features applied batons, day and month apertures at 3 o'clock, and a date display at 6 o'clock alongside chronograph sub-dials. The source reports the watch houses an automatic Zenith El Primero Calibre 4054 movement with an approximate 50-hour power reserve.

Front view of Zenith El Primero Winsor Annual Calendar wristwatch, reference 03.2070.4054/22.C708
Front view of Zenith El Primero Winsor Annual Calendar wristwatch, reference 03.2070.4054/22.C708 — Fortuna Auction / Bidsquare. Rights pending — permission not yet requested. Original source

Catalogue identity

Source
www.bidsquare.com
Category
Wristwatch · Annual calendar chronograph wristwatch
Maker / attribution
Zenith
Reference
03.2070.4054/22.C708
Catalogue / lot identifier
39
Source-reported date
circa 2010s
Country
Switzerland

Source-reported attribution and specifications are not independent authentication. A listing does not establish present ownership, current display, availability or permission to reproduce.

Object description

Physical Description and Case Construction

This Zenith El Primero Winsor timepiece is housed in a stainless steel case measuring 42.00 mm in diameter. The configuration includes a fluted winding crown situated at the 3 o'clock position, flanked by two rectangular chronograph pushers.

The watch is secured by an adjustable leather strap finished with an alligator-pattern embossing. The case back was not visible in the provided auction imagery.

Evidence for this section
  • “CASE MATERIAL: Stainless Steel”
  • “CASE DIMENSIONS: 42.00 mm in diameter”
  • “Fluted winding crown at 3 o'clock flanked by two rectangular chronograph pushers”
  • “Black leather strap with alligator-pattern embossing”

Dial Configuration

The dial features a blue outer ring with applied faceted hour indices and a central textured dark grey section. The display utilizes apertures for the annual calendar function: dual day and month apertures are positioned at 3 o'clock, with a date aperture at 6 o'clock.

The dial bears the signature 'ZENITH' below the 12 o'clock marker and 'SWISS MADE' at the 6 o'clock position.

Evidence for this section
  • “Blue outer dial ring with applied faceted hour indices and central textured dark grey section”
  • “Dual day ('MO') and month ('OCT') apertures at 3 o'clock and date aperture at 6 o'clock”
  • “Dial signed 'ZENITH' below 12 o'clock and 'SWISS MADE' at 6 o'clock”

Mechanism and Operational Status

The timepiece is powered by an automatic Zenith El Primero Calibre 4054 movement, which the source states provides an approximate power reserve of 50 hours.

The auctioneer reported that the movement was running at the time of cataloging. The internal mechanism was not visible in the provided auction photography.

Evidence for this section
  • “Features Zenith's El Primero Calibre 4054 automatic movement”
  • “approximate power reserve of 50 hours”
  • “Movement running at time of cataloging.”

Open research questions

  • Does the serial number, if present, correlate with specific production years within the 2010s?
  • Does the movement exhibit internal markings or identifiers consistent with the Calibre 4054?

Source evidence

Recorded claims and source quotations for Zenith El Primero Winsor Annual Calendar Wristwatch
FieldSource-reported valueSource quotation
Reference03.2070.4054/22.C708“REF.: 03.2070.4054/22.C708”
Case materialStainless Steel“CASE MATERIAL: Stainless Steel”
Case diameter42.00 mm“CASE DIMENSIONS: 42.00 mm in diameter”
Movement calibreEl Primero Calibre 4054“Features Zenith's El Primero Calibre 4054 automatic movement”
Power reserveApproximately 50 hours“approximate power reserve of 50 hours”
AccompanimentsZenith box, papers, manual“Accompanied by Zenith box, papers, manual.”
Reference Number03.2070.4054/22.C708“REF.: 03.2070.4054/22.C708”
Attributed Datecirca 2010s“CIRCA: 2010s”

Visible details

  • Blue outer dial ring with applied faceted hour indices and central textured dark grey section
  • Dual day ('MO') and month ('OCT') apertures at 3 o'clock and date aperture at 6 o'clock
  • Fluted winding crown at 3 o'clock flanked by two rectangular chronograph pushers
  • Black leather strap with alligator-pattern embossing
  • Dial signed 'ZENITH' below 12 o'clock and 'SWISS MADE' at 6 o'clock

Research qualifications

  • Case back and movement are not visible in the auction photograph
  • Movement condition is reported as running at time of cataloging without guarantee of working order

Photograph identity and source facts were screened before import; rights clearance remains pending.

Consulted source

Zenith El Primero Winsor Annual Calendar Black Eye Ref. 03.2070.4054/22.C708 in Stainless Steel sold at auction on 17th October | Bidsquare

Reviewed 2026-10-22 · Record de4bbc1a11

Terms in this record

Glossary explanations for terms named in this object’s record.