ROLEX REF. 116520 WHITE DIAL DAYTONA STEEL
Rolex, "Oyster Perpetual, Superlative Chronometer, Officially
Certified, Cosmograph Daytona" case No. 9MX51778, Ref. 116520.
Sold in September 2013.
Fine, self-winding, water-resistant, stainless steel wristwatch with
round button chronograph, registers, tachometer and a stainless
steel Rolex Oysterlock bracelet Ref. 78590. Accompanied by the
original warranty card, instruction booklet, fitted box and hang tag.
Three-body, polished and brushed, screwed down case back,
push-buttons and crown, Triplock winding-crown protected by the
crown guard, tachometer graduation on the bezel to 400 units per
hour, sapphire crystal.
White with applied luminous white gold indexes, subsidiary silver
ring dials for the seconds, the 12-hour and 30-minute registers,
outer minute and 1/5th seconds division. Luminous white gold
Cal. 4130, rhodium-plated, 44 jewels, straight-line lever
escapement, monometallic balance adjusted to 6 positions, shock
absorber, self-compensating free-sprung Breguet balance spring,
Microstella regulating screws, hack mechanism.