The Zenith El Primero made horological history on January 10, 1969, the day the first prototypes were presented to the press. It was the world’s first automatic, high-frequency chronograph, with a balance wheel running at 36,000 beats per hour.

The El Primero was launched with two models: the A386 in stainless steel and the G381 in 18k yellow gold. Both shared similar aesthetics, most notably with a 37.5 mm case that featured wide, faceted lugs, as well as pump pushers. But the inaugural El Primero models each had a distinct dial. Whilst the steel example was given overlapping tricolour registers, the yellow gold G381 had a more classical “panda”
dial of black registers on a white face.

Both models were in production for a mere three years – from 1969 to 1971 – and made in small numbers. According to the reference tome Zenith - Swiss Watch Manufacture Since 1865 by Manfred Rössler, only about 2,500 of the steel A386 were produced. And the precious-metal G381, unsurprisingly, is even rarer, with less than 700 made.

When Zenith marked the 50th anniversary of the El Primero last year, one of the vintage models it reproduced was the G381, as a 50-piece limited edition, underlining its historical significance.

The present example of this historical reference from 1969 is without a doubt in a most honest condition: no signs of restoration can be found on the dial, instead all the graphics are present and in extremely good condition, and the centesimal scale track has acquired a wonderful tropical brown hue.