ROLEX REF. 16520 DAYTONA COLOR CHANGE DIAL STEEL
Rolex, Oyster Perpetual, Superlative Chronometer, Officially Certified Cosmograph Daytona,
case No. A226940, Ref. 16520. Made in 1988.
Fine self-winding, water resistant to 100 m, stainless steel wristwatch with color change
dial, round button chronograph, registers, tachometer and a stainless steel Rolex Oysterlock
bracelet Ref. 78390.
Three-body, polished and brushed, screwed-down case back, buttons and crown, Triplock
winding-crown protected by the crown guard, tachometer graduation on the bezel to 400
units per hour, sapphire crystal.
Black with applied luminous white gold baton indexes, outer 1/5th seconds track, subsidiary
dials for the seconds, the 12-hour and 30-minute registers. White gold bâton hands.
Cal. 4030, rhodium-plated, 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.