Important Modern and Vintage Timepieces

New York, Jun 08, 2011

LOT 310

Rolex Ref. 16520 - Steel Daytona Color Change Dial Rolex Daytona, "Oyster Perpetual, Superlative Chronometer, Officially Certified, Cosmograph, Daytona," Ref. 16520. ?A? Series case, sold in 1999. Very fine and rare, self-winding, water-resistant, stainless steel wristwatch with round button chronograph, registers, tachometer and a stainless steel Rolex Oysterlock bracelet, Ref. 78390. Accompanied by a chronometer certificate and instruction booklet.

C. Three-body, polished and brushed, screw-down case back, chronograph buttons and Triplock winding crown, tachometer graduation on the polished bezel to 400 units per hour, sapphire crystal. D. Bicolor black and brownish silver with applied luminous steel indexes, subsidiary dials for the seconds, the 12-hour and 30-minute registers. Luminous steel baton hands. M. 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. Dial, case and movement signed. Diam. 40 mm. Thickness 13 mm. Approx. overall length 185 mm.