Zenith - El Primero Ref. G581 Original 1969 18kt. Gold Chronograph - Cal. 3019PHC
Zenith G581 El Primero G581 18K (37600) | European Watch Co.
Zenith - Zenith El Primero G581 chronograph, '70s sold at auction on 30th November | Bidsquare
ZENITH, EL PRIMERO, CHRONOGRAPH A fine and very rare, self-winding, 18k yellow chronograph wristwatch with date. | Important Modern & Vintage Timepieces. | Geneva, May 13th, 2018
ZENITH GOES FOR GOLD WITH THE LATEST ADDITION TO THE CHRONOMASTER SPORT LINE – Zenith Pressroom