Technical details:
Movement:Mechanical hand-wound movement, GF Calibre 01
Movement dimensions
iameter: 36.4 mm;Thickness: 9.65 mm
Number of parts
• Complete movement: 280 parts
• Tourbillon cage: 88 parts
• Weight of the cage: 0.39 g
Number of jewels :36
Olive-domed jewels in gold chatons
Power reserve :72 hours
Barrels :Rapid rotating twin barrels (1 Turn in 3.2 hours) one of which equipped with a slipping spring so as to avoid excess tension
Balance wheel :Free sprung balance with white gold mean-time screws (10 mm diameter)
Frequency :21’600 vibrations/hour
Balance spring
hillips terminal curve,Geneva-style stud
Main Plates :Spotted and snailed palladium-finished nickel silver
Bridges
• Hand bevelled, frosted and spotted palladium-finished nickel silver “Greubel Forsey” gold nameplate, relief-engraved gold plate with the number of the timepiece
• Steel conical bevelled Tourbillon bridge
• Positioned on a black PVD-coated titanium platform with mirror-polished backdrop Gearing
• Involute circle profile
• Tangential inclined gear with profiled teeth, on fixed wheel and escape wheel pinion
Tourbillon cage
• Inclined at a 25° angle, 24-second rotation
• Cage pillars in Avional
• Titanium cage bridges
• Gold counterweight.
Displays
• Hours and minutes
• Small second sector
• 72-hour power reserve on a sector
• 24-second Tourbillon rotation indicator at 8 o’clock
Case
• In gold with asymmetrical convex sapphire crystal
• Transparent back with asymmetrical convex sapphire crystal
• Lateral window with shaped sapphire crystal
• Raised engraving of the name of the Invention on a hand-punched background
• Gold security screws
• Polished bezel and centre band with hand-finished straight graining
• Hand-engraved individual number
Case dimensions
iameter: 43.5 mm,Thickness: 15.76 mm
Water resistance of the case :3 ATM – 30 m – 100 ft
Crown :Gold with engraved and black lacquered GF logo
Dial
• Gold dials
• Gold appliques
• Gold display sectors
• Applied gold logo
Hands
• Hours and minutes, small seconds and power-reserve in gold
• 24-second double-tipped hand, black anodised aluminium
Strap:Hand-sewn black alligator leather with gold folding clasp, hand-embossed with the Greubel Forsey initials
Informacion sacada de:
http://www.horozima.com/2009/08/greubel-forsey-tourbillon-24-secondes.html