6/30/2023 0 Comments Download elprimeroIt was presented in January 1969 in a press conference and aptly christened El Primero ( first in Spanish). The Zenith automatic chronograph was the first to be unveiled to the world. The calibre was also named ‘Datron HS 36’ at Movado, which commercialised the movement under the Zenith-Movado-Mondia consortium. Better known as El Primero, this development was initiated in 1962 with the goal of presenting the movement in 1965 to coincide with the centenary of the brand. The Zenith – code-named 3019 PHC calibre – was a high-frequency integrated chronograph with a horizontal clutch.The Seiko 6139 calibre was a 27mm integrated column wheel chronograph with vertical coupling and beating at 21,600 vibrations/hour (or 3Hz).It conceived the Calibre 11, a modular construction based on a micro-rotor Buren movement and a Dubois-Depraz chronograph mechanism. ![]()
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