Important Collectors’ Wristwatches, P...

Geneva, Oct 04, 2009

LOT 141

Floating Cosmograph, 225 UPH Rolex, "Oyster Perpetual, Superlative Chronometer, Officially Certified, Cosmograph, Daytona", case No. L244578, Ref. 16520. Made in 1988. Very fine and rare, self-winding, water-resistant, stainless steel wristwatch with round button chronograph, registers, tachometer and a stainless steel Oyster bracelet. Accompanied by a fitted box.

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 white and black with applied luminous steel baton indexes, subsidiary dials for the seconds, the 12-hour and 30-minute registers, outer minute/ seconds. Luminous steel baton hands. M. Cal. 4030, rhodiumplated, 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, index regulator, hack mechanism. Dial, case and movement signed. Diam. 40 mm. Thickness 12 mm. Approx. overall length 175 mm.