Important Collectors’ Wristwatches, P...

Geneva, Nov 16, 2008

LOT 704

Thomas Engel, No. 28, the carriage by Richard Daners, started in 1978, finished in 1980. Exceptionally fine and unique, 18K gold, keyless, one-minute flying tourbillon regulator pocket chronometer with 40-hour power reserve, annual calendar, sidereal and mean solar times, 12- and 24-hour indications and thermometer. Accompanied by the original mahogany fitted box, spare mainspring, hands, additional silver dial and certificate.

C. Four-body, "forme collier", screwed back decorated with wave-pattern engine-turning, engine-turned band, gold glazed cuvette, ball-shaped, swiveling pendant which is also a winding device. D. Gold, engine-turned, eccentric mean time set at 3 o'clock, marked by applied gold sun, radial Roman numerals calibrated for 12 hours with blued steel Breguet hands, concentric gold 24-hour baton hand, symmetrically to the left sidereal time chapter, marked by applied blued steel star, Roman numerals and blued steel Breguet hands revolving once in 24 hours, outermost annual calendar ring with gold wavy hand, 40-hour up-and-down aperture at 12 o'clock, subsidiary seconds at 6 o'clock, silver thermometer sector on the movement visible through glazed cuvette with gold scale plate. Similar, second silver dial enclosed. M. 50 mm, gilt half-plate, fausses cotes decoration, very light flying tourbillon, three-arm Y-shaped carriage with lateral lever escapement with divided lift, cut bimetallic compensation balance with special non-magnetic Nivarox Prima balance spring with Phillips terminal curves with two pins for adjustment between horizontal and vertical positions, entire train jeweled, the annual calendar driven by differential gearing from the sidereal train, unusual setting of all functions utilizing a pin protruding from the band at 11 o'clock and pulling the crown. Dial, movement and case signed. Diam. 56.7 mm.