ROLEX REF. 1806 DAY-DATE YELLOW GOLD Rolex, Oyster Perpetual, Day-Date, Superlative Chronometer Officially Certified, case No. 785361, Ref. 1806/1803. Made in 1961. Fine, tonneau-shaped, center seconds, self-winding, water-resistant, 18K yellow gold wristwatch with day and date and a rare Rolex 18k yellow gold link bracelet dated 2.61. Three-body, solid, polished and brushed, screwed-down case back and crown, fluted bezel, crystal with cyclops lens. Champagne with applied yellow gold faceted indexes, outer minute/seconds divisions, apertures for the day of the week and the date. Yellow gold luminous dauphine hands. Cal. 1555, rhodium-plated, oeil-de-perdrix decoration, 25 jewels, straight-line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock absorber, self-compensating free-sprung Breguet balance spring, Microstella regulating screws, hack mechanism. Notes Dial, case, and movement signed. DIAM. 36 mm. THICKNESS 12 mm. Approx. overall length 185 mm.