Important Collector's Wristwatches, P...

New York, Dec 01, 2004

LOT 247

Roger Dubuis, Genève, "Sympathie Chronograph Bi-retrograde Perpetual Calendar", No. 109, case No. 197995, Ref. S 37 5637 8. Produced in a limited edition of 28 examples in 1999. Very fine, square-cambré, astronomic, water-resistant, platinum "Bulletin d'Observatoire" gentleman's wristwatch with bi-retrograde perpetual calendar, moon phases and age, square button chronograph, register and an 18K white gold Roger Dubuis deployant clasp. Accompanied by an extra, solid platinum case back, a certificate and accessories.

C. Three-body, solid, polished and brushed, transparent case back with 8 screws and etched crystal, concave stepped bezel, sapphire crystals. D. White enamel with applied white gold square indexes, subsidiary seconds and 30-minute register dials, at 12 for the months and the leap years, on the sides, sectors for the retrograde days of the week and of the month, graduation for the age of the moon and aperture for the moon phases at 6. White gold "alpha" hands. M. Cal. RD 5637, stamped with the Geneva Quality Hallmark, rhodium plated, ?fausses côtes? decoration, 21 jewels, straight line lever escapement, monometallic balance adjusted to 5 positions, shock-absorber, self-compensating Breguet balance-spring, micrometer regulator. Dial, case and movement signed. Dim. 38 x 38 mm.