Zenith El Primero El Primero Chronomaster Full Open 38 Stainless Steel / Rose Gold / Alligator

Reference 51.2151.400/78.C810

Zenith El Primero Chronomaster Full Open 38 Stainless Steel / Rose Gold / Alligator

About this watch

The Zenith El Primero Chronomaster Full Open 38 is a masterpiece that combines elegance with exceptional functionality. At its core lies the Zenith caliber El Primero 400, an automatic movement boasting 36,000 vibrations per hour and 278 components. The round case measures 42.00 mm in diameter, protected by sapphire crystal, showcasing intricate details of the skeleton dial. Comfort is key, with an alligator leather strap and lug width of 21.00 mm. With a water resistance rating of 100 meters, this watch can handle everyday wear. Its versatility allows it to seamlessly transition from formal to casual settings, making it a worthy addition to any collection.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • Automatic movement
  • 36,000 vibrations per hour
  • 278 components and 31 jewels
  • Sapphire crystal protection
  • Water resistance up to 100 meters
  • Skeleton dial design
  • Alligator leather strap

Specifications

Brand
Zenith
Family
El Primero
Model
El Primero Chronomaster Full Open 38 Stainless Steel / Rose Gold / Alligator
Reference
51.2151.400/78.C810
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph, Column wheel
Case
42mm
Dial Color
Skeleton
Crystal
Sapphire
Water Resistance
100

Current Listings

[WTS] Zenith El Primero Flyback 18K Grand Chronomaster XT Collector Set - Whole Lotta Gold!

Zenith El Primero Flyback 18K Grand Chronomaster XT Collector Set - Whole Lotta Gold!

Zenith - 35.1250.4009 · $12,850
The Zenith El Primero Flyback 18K Grand Chronomaster XT Collector Set is a stunning large and in charge dress watch featuring an incredible dial with guilloche work. It comes in a collector set ready to stand out of the dress watch crowd.

  • Condition: Mint
  • Case diameter: 43MM
  • Material: 18K solid yellow gold
  • Movement type: Automatic chronograph
Posted at
Mar 23, 2026, 8:18 PM
Active
View listing on r/WatchExchange
[WTS] Zenith El Primero Chronomaster Triple Calendar Hodinkee Meteorite Limited Edition 1 of 200

Zenith El Primero Chronomaster Triple Calendar Hodinkee Meteorite Limited Edition 1 of 200

Zenith - 03.3401.3610/21.M3200 · $13,500
This limited edition Zenith El Primero Chronomaster Triple Calendar features a sporty reverse-panda setup with meteorite subdials, produced in collaboration with Hodinkee. The watch is complete with an unworn metal bracelet and leather strap, as well as a travel case and other accessories.

  • Condition: like new
  • Case diameter: 38.0mm
  • Thickness: 14mm
  • Water resistance: 50m
Posted at
Mar 23, 2026, 1:45 PM
Active
View listing on r/WatchExchange
[WTS] Zenith El Primero Tourbillon Chronograph XXT 18K White Gold - Just 50 Made w/ A Six Figure Retail!

Zenith El Primero Tourbillon Chronograph XXT 18K White Gold - Just 50 Made w/ A Six Figure Retail!

Zenith - 65.1260.4005/21.C505 · $21,950
The Zenith El Primero Tourbillon Chronograph XXT is a limited edition of just 50 made in full 18 karat white gold. It features an incredible tourbillon and comes with a six-figure retail value, as well as a collector set including an appraisal from Zenith.

  • Condition: Really clean condition, minimal wear throughout
  • Case Diameter: 45MM
  • Movement Type: El Primero automatic chronograph cal 4005
  • Strap Material: Zenith black leather
Posted at
Mar 22, 2026, 7:40 PM
Active
View listing on r/WatchExchange
[WTS] Zenith El Primero “Open Heart” - Increadible Value

Zenith El Primero “Open Heart” - Increadible Value

Zenith - 03.0520.4021 · $2,950
This is a Zenith El Primero “Open Heart” with a rare white dial variant, featuring the iconic high-beat chronograph movement and an open-heart design.

  • Condition: Very Good
  • Case Size: ~42mm diameter
  • Movement Frequency: 36,000 vph (high-beat)
  • Crystal Type: Sapphire crystal
Posted at
Mar 18, 2026, 1:50 PM
Active
View listing on r/WatchExchange
[WTS] Zenith El Primero New Vintage 1969 Limited Edition 40th Anniversary 96 1969 469/ 77 C683 ♦️Lightly Used 2014♦️

Zenith El Primero New Vintage 1969 Limited Edition 40th Anniversary 96 1969 469/ 77 C683 ♦️Lightly Used 2014♦️

Zenith - 96 1969 469/ 77 C683 · $6,137
The seller is listing a Zenith El Primero New Vintage 1969 Limited Edition 40th Anniversary watch, which was produced in Q3 2014. This limited edition model comes with a full set of box and papers.

  • Condition: Lightly Used
  • Year Of Manufacture: 1969
  • Limited Edition: True (40th Anniversary)
  • Box And Papers: Yes (full set)
Posted at
Mar 18, 2026, 5:56 AM
Active
View listing on r/WatchExchange
[WTS] Zenith El Primero ref. 01.0200.415 Big Blue circa 1973

Zenith El Primero ref. 01.0200.415 Big Blue circa 1973

Zenith - 01.0200.415 · $5,450
The Zenith El Primero is a legendary high-frequency automatic chronograph movement first introduced in 1969, beating at 5 Hz and measuring elapsed time with precision. It features an oversized TV-shaped case with a vibrant brushed yachting metallic blue dial, often referred to as the 'Big Blue'. This watch has a unique 1970s aesthetic and is highly sought after by collectors.

  • Condition: Excellent shape for its age, light signs of polish, private service in 2026
  • Case size: 42mm
  • Lug to lug length: 44h
  • Thickness: 14.3 cc
Posted at
Mar 17, 2026, 4:53 PM
Active
View listing on r/WatchExchange
[WTS] Zenith El Primero Port Royal V

Zenith El Primero Port Royal V

Zenith - 01/02.0450.400 · $2,650
The Zenith Port Royal V El Primero features symmetry, clarity, and attention to detail throughout its design, making it a visually stunning watch.

  • Condition: Excellent cosmetically
  • Case diameter: 40mm
  • Lug width: 20mm
  • Lug to lug: 47mm
Posted at
Mar 17, 2026, 11:43 AM
Active
View listing on r/WatchExchange
[WTS] Zenith 1969/1970 El Primero A385

Zenith 1969/1970 El Primero A385

Zenith - A385 · $7,500
Up for sale is a magnificent El Primero A385 from 1969-1970, limited to approximately 2,400 pieces. It is powered by Zenith’s automatic El Primero movement, Caliber 3019 PHC/400.

  • Condition: Excellent
  • Movement: El Primero Caliber 3019PHC
  • Power reserve: 50 hours
  • Case diameter: 37mm
Posted at
Mar 16, 2026, 5:11 PM
Active
View listing on r/WatchExchange
[WTS] BIG PRICE DROP! Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set!

BIG PRICE DROP! Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set!

Zenith - 35.1250.4009 · $12,950
The Zenith El Primero Flyback 18K Gold Grand Chronomaster XT Collector Set is a dress watch with an incredible dial and one of the most mesmerizing dials. It features a clean, classic look with a Swiss army knife of functions and has a 43MM 18K solid yellow gold case.

  • Condition: Mint
  • Case diameter: 43mm
  • Material: 18K solid yellow gold
  • Movement type: El Primero automatic chronograph cal 4009
Posted at
Mar 15, 2026, 9:45 PM
Active
View listing on r/WatchExchange