ROLEX REF. 16520 ZENITH DAYTONA STEEL
Rolex, "Oyster Perpetual, Superlative Chronometer, Officially
Certified, Cosmograph, Daytona", case No. A140691, Ref. 16520/16500. Sold on June 11th, 1999.
Fine, self-winding, water-resistant, stainless steel wristwatch with
round button chronograph, registers, tachometer and a stainless
steel Oysterlock bracelet. Accompanied by the original warranty,
fitted box and instruction booklet.
Three-body, polished and brushed, screw-down case back,
chronograph buttons and Triplock winding crown, tachometer
graduation on the bezel to 400 units per hour, sapphire crystal.
Bicolor black with silver subsidiary dial rings, applied luminous
white gold indexes, subsidiary dials for the seconds, the 12-
hour and 30-minute registers, outer minute and 1/5th seconds
divisions. Luminous white gold baton hands.
Cal. 4030, rhodium-plated, oeil-de-perdrix decoration, 31
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.