ROLEX REF. 6240 COSMOGRAPH STEEL
Rolex, Genève, Cosmograph, No. 1298294, Ref. 6240. Sold June 3rd, 1968.
Fine and rare, water-resistant, stainless steel wristwatch with black bezel, round button chronograph, registers,
tachometer and a stainless steel Rolex Jubilee bracelet Ref. 62510. Accompanied by the original fitted
box, guarantee (now void) and instructions.
Three-body, polished and brushed, screwed-down case back (Ref. 6238), buttons and Twinlock
winding crown, tachometer graduation on the bezel to 200 units per hour.
Bicolor silver and black with applied steel baton indexes and luminous dots, outer 1/5th seconds
track, subsidiary guilloché dials for the seconds, the 12- hour and 30-minute registers. Luminous steel
Cal. 722, rhodium-plated, 17 jewels, straight-line lever escapement, monometallic balance adjusted
to 3 positions, shock absorber, self-compensating Breguet balance spring, Microstella regulating screws.