ROLEX REF. 1803 DAY-DATE YELLOW GOLD Rolex, Oyster Perpetual, Day-Date, Superlative Chronometer Officially Certified, case No. 1548588, Ref. 1803. Made in 1967. Fine, tonneau-shaped, center seconds, self-winding, water resistant, 18K yellow gold wristwatch with day & date. Accompanied by the original Chronometer Certificate. Three-body, polished and brushed, fl uted bezel, screw down case back and crown, crystal with cyclops lens. Champagne with applied yellow gold faceted baton indexes, outer minute/seconds divisions, apertures for the day of the week and date. Yellow gold baton hands. Cal. 1556, rhodium-plated, oeil-de-perdrix decoration, 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. Dial, case and movement signed. Diam. 36 mm. Thickness 13 mm.