Important Collectors’ Wristwatches, P...

Geneva, Mandarin Oriental Hotel Du Rhône, Nov 12, 2006

LOT 91

Ref. 16520 Stainless Steel "Cosmograph Daytona" Rolex, ?Oyster Perpetual, Superlative Chronometer, Officially Certified, Cosmograph, Daytona", Ref. 16520, case No U284838. Made in 1997. Fine, self-winding, water-resistant, stainless steel gentleman's wristwatch with round button chronograph, registers, tachometer and a stainless steel Rolex Oysterlock bracelet.

C. 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. D. Bicolor black and 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.