ROLEX REF. 16520 MOTHER OF PEARL DAYTONA STEEL
Rolex, Oyster Perpetual, Superlative Chronometer, Officially Certified Cosmograph
Daytona, movement No. 162264, case No. A561100, Ref. 16520.
Made in 1988.
Fine self-winding, water -resistant, stainless steel wristwatch with mother
of pearl 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.
Mother of pearl with applied white gold Arabic indexes, outer 1/5th
seconds track, subsidiary dials for the seconds, the 12-hour and 30-minute
registers. Luminous 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.