A decorative work of art for a highly complicated model that takes two full months to craft each movement. Planisphere: decoration and skeletonisation of the movement to illustrate a planisphere represented by the combination of the base-plate, the three-quarter plate, the date bridge, the balance-cock and the power-reserve bridge.
Aesthetic challenge
Ensuring the readability of the perpetual calendar, moon-phase, day/night and power-reserve indications, while preserving the overall transparency was made possible by transparent discs that pivot and provide an immediate reading of the corresponding value by contrast, when they move across a light-coloured sector.
Manufacture-made movement
The Jaeger-LeCoultre Calibre 876SQ, the only perpetual calendar with an 8 day power reserve on the watch market: even more exceptional with a skeletonised movement!
Each piece in this edition of 175 bears the number 1833 engraved on the crystal that protects the dial.











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