Brand: Zenith
Model: El Primero A3817
Reference Number: A3817
Year of Production: 1971
Movement Number: 3019 PHC
Case Material: Stainless steel
Caliber: Zenith El Primero 3019 PHC (Automatic)
Strap Material: Leather
Buckle: Pin buckle
Case Size: 37 mm
Gender: Unisex
Dial: Tricolor (white background with blue and gray sub-dials)
Condition: Excellent (minimal signs of wear, lightly polished case)
Signed: Case, dial, movement
Limited Edition: Yes (1,000 pieces produced)
Case
The tonneau-shaped case features a screw-down back for durability and water resistance. The brushed finish adds a sporty yet refined look.
Dial
The unique tricolor scheme, with three contrasting sub-dials, enhances readability. The red chronograph hand adds a striking visual detail.
Movement
The El Primero 3019 PHC is a horological milestone—one of the first high-frequency automatic chronograph movements, later adopted by Rolex for the Daytona ref. 16520.
The Zenith El Primero A3817 is a rare and iconic timepiece, produced in 1971 as part of a limited run of 1,000 units. Renowned for housing the groundbreaking El Primero caliber, the world’s first automatic chronograph movement, this watch is a true collector’s item. Its tri-color dial with three striking sub-dials, paired with a subtle stainless steel case, is instantly recognizable. Despite its age, the watch remains in well preserved condition, showcasing only minimal polishing to its case. The El Primero 3019 PHC movement delivers robust performance, combining precision with historical significance. A leather strap complements the vintage aesthetic of this exquisite model.