Zenith El Primero Chronomaster Revival A386 “Manufacture Edition” Full Set ref. 03.Z386.400Originally unveiled in 1969 as the worlds first automatic chronograph calibre, the El Primero (Spanish for the first one) remains one of the most revered movements over 50 years later. The first El Primero chronograph, the A386, introduced in 1969, was distinguished by its three subdials in blue, light grey, and anthracitea signature layout that would go on to define many El Primero models in the years that followed. For its inaugural Manufacture