The Art of American Horology & Colle...

New York, Nov 28, 2001

LOT 501

Rolex, Oyster Perpetual, Superlative Chronometer, Officially Certified Cosmograph "Daytona", Ref. 16520. Production of this reference started in 1988.Fine, self-winding, water-resistant to 100 meters, stainless steel gentleman's wristwatch, with round button chronograph, register and tachometer, 50 hours autonomy, stainless steel Oyster bracelet and deployant clasp.

C. three-body, solid, polished and brushed, screwed-down case back, buttons and Triplock crown, tachometer graduation on the bezel to 400 units per hour, sapphire crystal. D. bicolor black and white with applied tritium-coated steel indexes, auxiliary dials for the seconds, the 12 hours and 30 minutes registers. "Bâton" tritium-coated steel hands. M. Cal. 4030, rhodium-plated, 31 jewels, straight line lever escapement, Superbalance balance adjusted to 6 positions, shock-absorber, self-compensatig Breguet balance-spring, micrometer regulator.Dial, case and movement signed.Diam. 40 mm.