ROLEX REF 6239 DAYTONA STEEL
Rolex, "Cosmograph Daytona," case No. 1463498, Ref. 6239.
Made circa 1965.
Very fine and rare, water-resistant, stainless steel wristwatch with
round button chronograph, registers, tachometer and a stainless
steel Rolex Oyster bracelet. Accompanied by a service box.
Three-body, polished and brushed, tachometer graduation on
the steel bezel to 200 units per hour, screwed-down case back and
winding crown.
Bicolor silver and black with applied steel baton indexes and luminous
dots, outer 1/5th seconds track, subsidiary guilloche dials
for the seconds, the 12- hour and 30-minute registers. Luminous
steel baton hands.
Cal. 722-1, rhodium-plated, 17 jewels, straight-line lever
escapement, monometallic balance, shock absorber, self-compensating
Breguet balance spring, Microstella regulating screws.