ROLEX REF 6238 PRE-DAYTONA 14K YELLOW GOLD Rolex, Chronograph, case No. 1436375, Ref. 6238. Made for the American Market in 1969. Very fine and rare, water-resistant, 14K yellow gold wristwatch with round button chronograph, registers and tachometer with a 14K yellow gold Rolex Oyster riveted bracelet. Three-body, polished and brushed, screwed-down case back, screwed-down crown, polished inclined bezel. Satine silver with applied faceted yellow gold baton indexes and luminous dots, sunk subsidiary guillochÈ dials for the seconds, the 12-hour and 30-minute registers. Luminous yellow gold baton hands. Cal. 72B, rhodium-plated, 17 jewels, straight-line lever escapement, monometallic balance adjusted to three positions, shock absorber, self-compensating Breguet balance spring, Microstella regulating screws.