A ref. A386 El Primero, a technical masterclass in movement design, Zenith's calibre 3019 PHC was not just amongst the earliest automatic chronographs
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1960s Zenith El Primero A386 Steel Chronograph Automatic Gay
1960s Zenith El Primero A386 Steel Chronograph Automatic Gay
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Zenith El Primero A386 Chronograph – Analog:Shift
1970s Zenith El Primero (Ref. A386)
Zenith El Primero A386
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1969 Vintage Zenith El Primero Chronograph Reference A386 Mark I