Description
ZENITH REF. 01-0010 420 PRIME CHRONOGRAPH STEEL Zenith, "El Primero," Ref. 01-0010 420. Made in the 1990's. Fine, water-resistant, stainless steel, water-resistant wristwatch with date, oval button chronograph, registers, tachometer | Important Modern & Vintage Timepieces | Geneva, May 15, 2016 ZENITH REF. 01-0010 420 PRIME CHRONOGRAPH STEEL Zenith, "El Primero," Ref. 01-0010 420. Made in the 1990's. Fine, water-resistant, stainless steel, water-resistant wristwatch with date, oval button chronograph, registers, tachometer, Three-body, polished and brushed, concave lugs, stepped inclined bezel, transparent screw-down case back, sapphire crystals. Black with luminous Arabic numerals, outer 1/5th seconds track and tachometer scale to 400 UPH, subsidiary dials for the seconds, the 12-hour and 30-minute registers, aperture for the date between 4 & 5. Luminous steel epee hands. Cal. 420, rhodium-plated, 25 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating flat balance spring, micrometer regulator.
