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This 950 platinum dual time zone watch displays the global time zones in real time from the perspective of the North Pole where they converge. The globe at 8 o’clock completes an anti-clockwise rotation (the same direction in which our planet spins) in 24h. The hours and minutes are indicated on an off-centre main dial, while the 24-second tourbillon is visible at 5 o’clock, small seconds at 2 o’clock, a sectorial power reserve indicator at 3 o’clock, and second time zone at 10 o’clock. The caseback displays universal time for 24 time zones via a rotating disc bearing the names of 24 cities, with light-colored cartouches differentiating summer time (for cities which follow this system).
Tourbillon 24 Secondes Contemporain
Housed in a white gold case, this timepiece showcases a ‘floating’ natural titanium movement. The Tourbillon 24 Secondes mechanism is visible between 6 and 9 o’clock, supported by a transparent sapphire bridge. The multi-level dial features a raised sapphire chapter ring for the hours and minutes, with 12 o’clock in raised white gold. It also features a power reserve indicator at 4 o’clock and small seconds at 9 o’clock. At 3 o’clock and 9 o’clock, two gold plates, hand-engraved with the philosophy of Robert Greubel and Stephen Forsey, adorn the caseband. It is completed by a hand-stitched alligator strap with a folding clasp in white gold.
Double Tourbillon Technique Black
The Double Tourbillon Technique Black is the first Greubel Forsey timepiece to feature a titanium case and a rubber strap. The highly polished steel bridges stand out against the subdued black chrome of the movement plates and bridges. The Double Tourbillon 30°, with its two tourbillons – one rotating inside the other – is visible at 6 o’clock. The hours and minutes are indicated on a transparent sapphire crystal ring, with small seconds at 9 o’clock and a power reserve indicator at 3 o’clock.
Double Tourbillon Asymétrique
A reinterpretation of the Double Tourbillon 30°, this timepiece features an asymmetric case. Housed in a 5N white gold case, the Double Tourbillon Asymétrique features a curved lateral window showcasing the double tourbillon system at 8 o’clock and the rotating disk of the power reserve at 2 o’clock, indicated by a fixed red triangle. The black and anthracite dial also features white gold hour and minute hands, as well as the small seconds at 6 o’clock, indicated by triangular red hand. Only 11 pieces of the 5N white gold version were produced (with another 11 produced in white gold).
Photo credit: Donnelly Marks Photography for Haute Time.