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A masterwork truly belonging among the greatest feats of independent horology. This exceptional timepiece pioneers Greubel Forsey's unprecedented Quadruple Tourbillon escapement, calibrating the movement through four tourbillons suspended within exquisitely finished cages. Beyond peerless precision, it also sets a new bar for displaying dual time zones - most spectacularly through a patented rotating globe indicating a secondary GMT and fixed 24-hour scale on the case back.
The dial presents a three-dimensional complexity befitting this technical tour de force. Above, the hours and minutes take center stage along with a72-hour power reserve. Below sit the small seconds and adjustable second time zone display. Meanwhile on the case back, universal time can be read through the open sapphire crystal.
Through meticulous craftsmanship, each finely polished component is imbued with purity and grace. Four dancing tourbillons appear to float beneath the rotating blue orb representing our planet. Limited to a sole 66 pieces, the first 11 exclusively in 18k white gold, it stands apart as a legendary feat attainable only through independent artistry.
A marvel both mechanically and visually, the GMT Quadruple Tourbillon transcends mere watchmaking to become a technical work of art perfecting time, precision and aesthetics. An eternal testament to passion, genius and the unfettered potential of independent watchmakers.