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Zenith "El Primero Chronomaster" Automatic Wristwatch

Item Details

Condition Details
- running at time of evaluation without detailed testing, future state not guaranteed.
- tricolor overlapping subdials.
- continuous 60 seconds subdial.
- 30-minute subdial.
- exhibition case back.
- 12-hour subdial.
- 10 beats second.
- 36,000 vibrations per hour.
- cal. automatic (marked next to balance wheel).
- both leather band keepers are frayed.
- nicks and scratches on lugs.
- includes box, book and booklet.

Brand: Zenith
Type: Wristwatch
Model Name: El Primero Chronomaster
Model Number: Ref.# 03.2040.400
Lug to Lug (mm): 50
Case to Case (mm): 42
Bezel Material: Stainless Steel
Case Material: Stainless Steel
Caseback Material: Stainless Steel
Movement: 400 El Primero, 31 Jewels
Functions: Chronograph, Date, Subdials
Bracelet/Fob Material: Leather, Stainless Steel
Bracelet/Fob Style: Band
Clasp Style: Deployment
Total Length: 6.75", 8.00"
  • Timekeeping accuracy not guaranteed.
  • This item has been evaluated and verified by a Certified Master Electronic Watchmaker.
  • EBTH assumes all watches unisex and does not specify the gender of a piece. For size reference, please see the case measurements of the piece listed under dimensions.
  • Pre-owned jewelry may contain minor markings/imperfections throughout.
  • While we represent items accurately on our site to the best of our ability, the color calibration of computer monitors can vary, causing colors to appear slightly different from one monitor to another. Due to this, please note that precise color representation of metal and gemstones is not always possible.


- the bracelet measurements range from 6.75" to 8.00".

Item #


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