Description
Limited edition of 18 pieces.
18k blackened gold and sapphire crystal case.
Size : 47 mm.
Thickness : 25 mm.
Sapphire apertures on sides.
Bows : 18k black gold lift-out rotating, “bows” for winding, time-setting.
Two wheel on caseback sides for synchronization of the sidereal time: celestial dial and oval sky indicator.
Crystal : unique domed sapphire with anti-reflective treatment.
Water resistance : 30 meters – 100 feet.
Celestial dial.
Black grade 5 titanium.
18k gold hand-engraved and applied stars and zodiacal signs.
Hour and minute subdial : titanium, hand angled and polished, lacquered indexes.
Differential gear system.
Hand finished blue.
Black Louisiana alligator leather strap.
18k rose gold folding buckle.
Sidereal display :
Celestial dial covering the internal surface of the inside case, representing the celestial vault through zodiac signs.
A full rotation in 1 sidereal year counter clockwise.
Oval sky indication : showing the portion of the stars visible from the northern hemisphere, a full rotation clockwise in 1 sidereal day above the celestial vault.
Month indication : 12 months on sides of the celestial dial : indication index located at 6 o’clock position.
Day and night indication :
Lacquered hand-engraved titanium globe, rotating on 2 axes :
1st axis : a full rotation on itself in 24 hours;
2nd axis : central axe, travelling across the celestial vault in 20 minutes.
Inside a tinted half-domed sapphire, symbolizing night and day.
Gravitational triple axis tourbillon :
Rotating on 3 axes :
1st axis : in 60 seconds,
2nd axis : in 5 minutes,
3rd axis : central axe, travelling across the celestial vault in 20 minutes.
Orbital second indication :
Rotating on 2 axes :
1st axis : in 60 seconds,
2nd axis : central axe, travelling across the celestial vault in 20 minutes.
Open worked titanium wheel and hand indicating seconds.
Hour and minute indication :
Patented differential system.
Rotating on a central axe, travelling across the celestial vault in 20 minutes.
The Jacob cut moon :
Weight : 1 carat.
288 facets white diamond patented Jacob cut rotating on 2 axes :
1st axis in 60 seconds.
2nd axis : central axe, travelling across the celestial vault in 20 minutes.
Exclusive manufacture Jacob and Co. manual winding.
Diameter : 40 mm.
Height : 17 mm.
Components : 395.
Material : titanium with black treatment.
System : gravitational triple axis tourbillon.
