C. Four-body, solid, polished, hinged case back over transparent cover to view the movement, protected winding crown, gold screwed bars, sapphire crystals. D. Champagne with applied yellow gold Breguet numerals, subsidiary seconds dial. Yellow gold Breguet hands. M. Cal. R 27 PS, stamped with the Seal of Geneva quality mark, rhodium plated, fausses côtes decoration, 39 jewels, straight-line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, free-sprung, selfcompensating flat balance spring, 22K gold micro-rotor, repeating on gongs by activating slide on the band. Dial, case and movement signed. Diam. 35 mm. Thickness 11 mm.
Grading System:
CHF 300,000 - 400,000
USD 300,000 - 400,000
EUR 200,000 - 270,000
C. Three-body, solid, polished, stepped bezel, case band embossed with Calatrava pattern, concave lugs with screwedbars, transparent screw-down case back, sapphire crystals. The crown at 2 adjusts the time and to wind the watch, the one at 4 adjusts the sky, lunar orbit and moon phases. D. Blue sky chart with gold star constellations and North/South/ East/West divisions, made from 3 superimposed sapphire crystal disks, outer divisions to adjust moon phases and sky, outermost Roman hour graduations, aperture for the moon phases. White skeletonized feuille hands. M. Cal. 240/165, stamped with the Seal of Geneva quality mark, rhodium-plated, fausses cotes decoration, 45 jewels, straight-line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and 5 positions, shock absorber, selfcompensating free-sprung flat balance spring, 18K yellow gold micro-rotor. Dial, case and movement signed. Diam. 43 mm. Thickness 10 mm.
Grading System:
CHF 180,000 - 240,000
USD 180,000 - 240,000
EUR 120,000 - 160,000
Sold: CHF 228,000
C. Four-body, "bassine", polished. D. Front: cream with applied yellow gold Breguet numerals, retrograde date sector, hour and minute recording dials combined with the power reserve sectors for the going and striking trains, moon phase, year, month, day and four-year cycle apertures, second time zone, thermometer, winding crown position indicator, alarm indicator, outer 1/5th seconds scale with five minute/seconds red Arabic markers and subsidiary constant seconds. Blued steel and yellow gold hands. Back: Silvered with hours of sidereal time, date of Easter sector, sun-rise and sun-set dials, subsidiary sidereal seconds, equation of time sector, sun hand and aperture for the star chart. Blued steel and yellow gold hands. M. Cal. 89, three barrels on four levels, maillechort, 600 grams, fausses cotes decoration, 126 jewels, 1728 parts, straight-line lever escapement, Gyromax balance, blued-steel Breguet balance spring, adjusted to heat, cold, isochronism and five positions, tourbillion regulator. Dial side main plate: mechanisms for the chime, alarm, 12-hour recorder and the power reserve indicators for the chime and movement. Reverse main plate, mechanisms for mean time, the chronograph, the 30-minute recorder and the tourbillon regulator. Plate 2: Mechanisms for sidereal time, the season, solstices, equinoxes and solstice, the times of sunrise and sunset, the equation of time, the date of Easter and the star chart. Plate 3: The mechanisms for the secular perpetual calendar, the second time zone, the phases and age of the moon and the thermometer. Dial, case and movement signed. Diam. 88.2 mm, 41.07 mm thick (with the crystals), total weight 1100 grams.
Grading System:
CHF 0 - 0
Sold: CHF 5,120,000