ROLEX REF. 16520 ZENITH DAYTONA STEEL
Rolex, "Oyster Perpetual, Superlative Chronometer, Officially
Certified, Cosmograph, Daytona", case No. A202613, Ref. 16520/16500. Made circa 1999.
Fine, self-winding, water-resistant, stainless steel wristwatch with
round button chronograph, registers, tachometer and a stainless
steel Oysterlock bracelet
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 white and black 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.