Zenith — Chronomaster

el Primero

Name: Zenith el Primero A781
Brand: Zenith
SKU: A781

The A781, produced in 1971, is a 38 mm El Primero in stainless steel with gold-plated examples observed, distinguished by its pink/red dial and driven by the manual-winding El Primero 420 at 36,000 vph with a 50-hour reserve. It is rated to 50 m.

Open in The Dial Atlas

ReferenceA781

BrandZenith

FamilyChronomaster

Produced1971

StatusDiscontinued

Editorial context

Stories featuring A781

Follow this reference into the histories, collector guides, and cultural stories where it matters.

Zenith — 9 min readZenith Chronomaster: El Primero, the Attic, and the 1/10th-Second IdeaA connected history of Zenith Chronomaster, from the 1969 El Primero A384, A385, and A386 to the quartz-crisis survival story, Revival models, Chronomaster Original, and Chronomaster Sport with the modern El Primero 3600.