ZenithRef. SP 1205
Year of manufacture1111
ZENITH REF. SP 1205 EL PRIMERO CHRONO STEEL
Zenith, "Chronograph, Automatic, El Primero," case No. 861D772,
Ref. SP 1205. Made in the 1970s.
Fine and rare, self-winding, water-resistant, stainless steel
wristwatch with round button chronograph, registers, date and
Two-body, polished and brushed, flat bezel, lapidated lugs,
screwed-down case back.
Two-tone silver and black with applied steel luminous baton
indexes, subsidiary dials for the seconds, 30-minute and-12
hour registers, outer 1/5th seconds track and tachometer scale,
aperture for the date between 4 and 5. Luminous white and
black baton hands, red luminous seconds register.
Cal. 3019 PHC, rhodium-plated, 31 jewels, straight-line
lever escapement, monometallic balance, shock absorber,
self-compensating flat balance spring, index regulator.