GREUBEL FORSEY Tourbillon 24 Secondes Asymmetrical Platinum Anthracite Gold Dial

The Tourbillon 24 Secondes in platinum is distinguished by the three-dimensionality of its dial architecture. The harmonious arrangement of the subdials creates a dynamic view of the indications as well as a majestic backdrop for the tourbillon. The 18k gold anthracite dial is comprised of interweaving curves and concentric rings complementing the new shape of the flat-polished tourbillon bridge, while sculptured Super-LumiNova filled hands offer superb legibility.

Movement
Movement dimensions
Diameter : 36.40 mm
Tickness : 9.35 mm
Number of parts
Movement : 277 parts
Tourbillon cage : 88 parts
Weight of the cage : 0.39 g
Number of jewels
36
Olived-domed jewels in gold chatons
Chronometric Power Reserve
72 hours
Barrels
Two series-coupled fast rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension
Balance wheel
Variable-inertia with gold mean-time screws (10 mm diameter)
Frequency
21'600 vibrations/hour
Balance spring
Phillips terminal curve
Geneva-style stud
Main plates
Nickel silver, spotted and snailed, with polished bevelling and countersinks, straight-grained flanks, nickel-palladium treatment
Bridges
Nickel silver, frosted and spotted with polished bevelling and countersinks, straight-grained flanks, nickel-palladium treatment
3 engraved gold plates (1x Greubel Forsey, 1x individual number, 1x name of the invention)
Flat black polished steel tourbillon bridge
Black PVD-coated titanium platform under the tourbillon and polished backdrop
Tourbillon
Inclined at a 25° angle, 24-seconds rotation
Light alloy cage pillars
Titanium cage bridges
Gold counterweight
Gearing
Involute circle profile
Tangential inclined gear on fixed wheel and profiled teeth on escape wheel pinion
Displays
Hours and minutes
Small seconds
72-hours power reserve on a sector
24-seconds tourbillon rotation
Exterior
Case
In platinum 950 with asymmetrical convex synthetic sapphire crystal
Transparent back with asymmetrical convex synthetic sapphire crystal
Lateral window with shaped synthetic sapphire crystal
Three-dimensional, variable geometry-shaped lugs
Raised polished engraving "Tourbillon 24" Incliné" and "Greubel Forsey" on a hand-punched background
Gold security screws
Hand-polished bezel, caseband with hand-finished straight graining
Hand-engraved individual number
Case dimensions
Diameter : 43.50 mm
Tickness : 16.11 mm
Water resistance of case
Water-resistant 3 atm - 30 m - 100 ft 
(Standard NIHS 92-20/SN ISO 22810:2010)Crown
In platinum 950 with engraved and black lacquered GF logo
Dial
Multi-level in gold, anthracite colour
Gold hour markers
Gold display sectors
Relief-engraved zone of text
Gold plate engraved with the individual number of the timepiece
Gold GF logo
Hands
Hours and minutes in gold with Super-LumiNova, small seconds and power-reserve in polished gold
24-seconds double-tipped hand, black anodised aluminium
Strap and clasp
Hand-sewn alligator
Platinum 950 folding clasp, hand-engraved with the GF logo