ROLEX REF. 1601 DATEJUST STEEL AND YELLOW GOLD Rolex, "Oyster Perpetual Datejust, Superlative Chronometer, Officially Certified," case No. 2923546, Ref. 1601. Made in 1970. Fine, center seconds, self-winding, water-resistant, stainless steel and yellow gold Chronometer wristwatch with date and a stainless steel and yellow gold Rolex Jubilee bracelet with deployant clasp. Three-body, polished and brushed, screw-down case back and crown, fluted bezel, crystal with cyclops lens. Blue with applied yellow gold baton indexes and luminous dots, outer minute/seconds divisions, aperture for the date. Luminous yellow gold baton hands. Cal. 1570, rhodium-plated, 26 jewels, straight-line lever escapement, monometallic balance adjusted to 5 positions and temperature, shock absorber, self-compensating free-sprung Breguet balance spring, Microstella regulating screws, hack mechanism. Notes Dial, case and movement signed. DIAM. 36 mm. THICKNESS 13mm. Approx. overall length 190 mm.