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Lot Essay
With Greubel Forsey Certificate of Authenticity dated January 2012 and stamped by Milan retailer Orologeria Pisa, loupe, polishing cloth, gloves, fitted presentation box and outer packaging. Furthermore delivered with Greubel Forsey Extrait du Grand Livre and Certificat de Grand Service. This certificate is valid during six months following the date of acquisition of the watch at Christie's, offering the new order a free servicing of the present watch in Greubel Forsey's workshops, subject to conditions published on the back of the Certificate.
The groundbreaking Quadruple Tourbillon Differential encapsulates the pioneering advances of Greubel Forsey, boasting an impressive four separate tourbillons that are separated into two regulating organs, connected by a spherical differential which calculates median precision for the time display. Each regulating organ comprises a balance wheel oscillator placed in the cage of the first tourbillon that is inclined at 30 degrees and rotates once a minute, this mechanism is then placed within a second tourbillon that rotates every four minutes. This horological masterpiece is equipped with a 50 hour power reserve via two fast-rotating barrels that transmit their energy to the two regulating organs using the spherical differential. The construction and adjustment of these three-dimensional multi-axis whirlwinds is pure artistry in the realm of high complications.
The groundbreaking Quadruple Tourbillon Differential encapsulates the pioneering advances of Greubel Forsey, boasting an impressive four separate tourbillons that are separated into two regulating organs, connected by a spherical differential which calculates median precision for the time display. Each regulating organ comprises a balance wheel oscillator placed in the cage of the first tourbillon that is inclined at 30 degrees and rotates once a minute, this mechanism is then placed within a second tourbillon that rotates every four minutes. This horological masterpiece is equipped with a 50 hour power reserve via two fast-rotating barrels that transmit their energy to the two regulating organs using the spherical differential. The construction and adjustment of these three-dimensional multi-axis whirlwinds is pure artistry in the realm of high complications.