With Greubel Forsey Tourbillon 24 Secondes Incliné N. 61 Owner's Book dated 1 May 2010 and Duplicata, loupe, gloves, polishing cloth, original wooden suede lined presentation box with beveled glass window 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 present "Tourbillon 24 Secondes Incliné No. 61" is preserved in like new overall condition and has never been offered in public before.
With the Tourbillon 24 Secondes Incliné, Greubel Forsey's third fundamental invention, the house capitalizes upon the speed of rotation and the inclination of the regulator to harness the influence of gravity on the regulating organ. Enabling the moving parts to cover a major distance in a short space of time and to perform a complete rotation in just 24 seconds called for the implementation of innovative solutions including a specially constructed inclined gear profile. The use of extremely low-density alloys stemming from the aeronautical and aerospace industries facilitated the creation of a unique and ultra- light Tourbillon system inclined at a 25° angle, perfectly suited to the powerful stresses imposed by the speed and in particular by the cage advancing in steps which are two and a half times greater than in conventional tourbillon systems. The construction of the Calibre GF01 has off-centred the Tourbillon 24 Secondes Incliné system, a technical option that provided scope to define an original case and dial architecture characterized by a well-balanced asymmetry. The latter serves to ensure ideal visual access to the mechanism and to the various items of information.
Robert Greubel and Stephen Forsey have been working together for nearly 20 years in a relationship founded on their shared technical creativity and quest for perfection.
In 1999 they began working on a new generation of tourbillon specifically designed to improve the timekeeping of the mechanical watch. Four years later they unveiled "Greubel Forsey" and stunned horological aficionados with their innovative Double Tourbillon 30°, a timepiece clearly demonstrating their twin goals of innovation and excellence.
Robert and Stephen continue to build on their deep traditional knowledge gained with four decades of combined experience in high-end complicated timepieces, by inventing and developing technically valid horological complications to rigorous aesthetic principles.