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Details & Cataloguing

Important Watches

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Geneva

Zenith
EL PRIMERO, REF SP 1301 STAINLESS STEEL CHRONOGRAPH WRISTWATCH WITH DATE CIRCA 1970
Dial: silvered vignette
Calibre: cal. 3019 automatic, 31 jewels
Case: stainless steel, screw-down back
Case number: 7'07D'911
Closure: stainless steel buckle
Dimensions: 37.5mm
Signed: case, dial and movement
Accessories: none
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Catalogue Note

The El Primero was one of the first three automatic chronograph movements introduced in 1969, together with the Heuer calibre 11 and Seiko's calibre 6139. Zenith was the first brand to announce its automatic chronograph movement, Seiko the first to release it and Heuer the first Swiss manufacturer to do so. The production of the El Primero movement was halted in 1972 during the quartz crisis. Still highly regarded in the industry, it was resurrected in 1986 since it was chosen by Rolex as the base calibre for their first automatic Daytona models.

Important Watches

|
Geneva