Important Modern and Vintage Timepieces

New York, Jun 08, 2011

LOT 309

ROLEX ? REF. 6263 ? OYSTER COSMOGRAPH DAYTONA "SIGMA DIAL" Rolex, ?Oyster Cosmograph,? case No. 4127964, Ref. 6263/6265. Made in 1976. Fine, water-resistant, stainless steel wristwatch with black bezel, round button chronograph, registers, tachometer and a stainless steel Rolex Oyster bracelet.

USD 15,000 - 20,000

CHF 13,000 - 17,000 / EUR 10,000 - 13,000

Sold: USD 25,000

c. Three-body, polished and brushed, screwed-down case back, buttons and Triplock winding crown, tachometer graduation on the bezel to 200 units per hour. D. Bicolor black and silver with applied steel baton indexes and luminous dots, outer 1/5th seconds divisions, subsidiary guilloché dials for the seconds, the 12-hour and 30-minute registers. Luminous steel baton hands. M. Cal. 727, rhodium-plated, 17 jewels, straight line lever escapement, monometallic balance adjusted to 3 positions, shock absorber, self-compensating Breguet balance spring, Microstella regulating screws. Dial, case and movement signed. Diam. 37 mm. Thickness 13 mm. Approx. overall length 200 mm.


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Grading System
Grade: AAA

Excellent
Case: 3

Good
Movement: 3*

Good

Overhaul recommended, at buyer's expense
Dial: 3-01

Good

HANDS Original

Notes

The term Sigma dial refers to the addition of the "O" symbol flanking the T Swiss T signature at the bottom of the dial, that resembles the Greek letter Sigma. The "O" on the Rolex dials refers to the Italian word "Oro", or the French "Or", and indicates the use of white gold batons.