ROLEX REF. 6238 PRE-DAYTONA BLACK DIAL 14K YELLOW GOLD
Rolex, "Chronograph", case No. 1697066, Ref. 6238. Made for the North
American Market circa 1968.
Very fine and extremely rare, water-resistant, 14K yellow gold wristwatch with
round button chronograph, registers, tachometer
Three-body, solid, polished and brushed, screwed-down case back and
crown, polished inclined bezel.
Black with applied yellow gold baton indexes and luminous dots, subsidiary
dials for the seconds, the 12-hour and 30-minute registers, outer 1/5th
seconds/minute divisions, outermost tachometer scale. Luminous steel alpha
Cal. 722, rhodium-plated, 17 jewels, straight-line lever escapement,
monometallic balance adjusted to three positions, shock absorber, self-compensating
flat balance spring, Microstella regulating screws.