The Collection of a European Nobleman

Geneva, May 11, 2008

LOT 139

American Perpetual Calendar Dual Time Roger Dubuis, Horloger Genèvois, "Window's Perpetual Calendar Dual Time", No. 02/28, movement No. 2556, Ref. H043 1429 0. Made in a limited edition of 28 pieces, circa 2005. Very fine and rare, large, two time zone, self-winding, waterresistant 18K white gold wristwatch with digital perpetual calendar, 24-hour, day and night and leap-year indications, moon phase and an 18K white gold Roger Dubuis deployant clasp.

C. Three-body, polished and brushed, concave bezel, correctors on the rounded band, large curved lugs, transparent back with 6 screws, co-axial button in the crown for advancing the secondtime- zone, sapphire crystals. D. Matte white with bold radial Roman numerals, inner minute track, linear apertures for the date, days of the week and months, aperture for the day and night indication at 8, and leap-year indication at 4, moon phases concentric with 24-hour indication. Blued steel epee and pear hands. M. Cal. RD14, stamped with the seal of Geneva Quality Mark, rhodium-plated, fausses cotes decoration, 33 Jewels, straight-line lever escapement, monometallic balance adjusted to 5 positions, self-compensating flat balance spring, shock absorber, swan-neck micrometer regulator, gold rotor. Dial, case and movement signed. Diam. 44 mm. Thickness 15 mm.