Greubel Forsey Tourbillon 24 Secondes Vision in 5N Red Gold

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During SIHH 2016, Greubel Forsey presented a new red gold version of their award winning Tourbillon 24 Secondes Vision timepiece.

Equipped with a mechanical hand wound movement featuring a patented 24-seconds tourbillon inclined at a 25° angle, this new model in 5N red gold measuring 43.50 mm diameter features a multi-level in gold dial in black-anthracite or silvered colour with engraved and “oven fired” enameled indexes and small seconds counter.

Greubel Forsey Tourbillon 24 Secondes Vision In 5N Red Gold

This timepiece is fitted on a hand-sewn black alligator leather strap with 18k 5N red gold pin buckle.

Technical details

Model: Greubel Forsey Tourbillon 24 Secondes Vision in 5N Red Gold

Movement

Mechanical hand-wound movement with patented tourbillon
Tourbillon 24 Secondes • hours and minutes • small seconds • power-reserve

Movement dimensions
Diameter: 36.40 mm
Thickness: 7.09 mm

Number of parts
Movement: 293 parts
Tourbillon cage: 86 parts
Weight of the cage: 0.38 g

Number of jewels
41
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
Black PVD-treated motor wheel with relief engraving

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, frosted and spotted, 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
1 engraved gold plate (individual number)
Arched and barrel-polished steel tourbillon bridges

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 gold sector (caseback side)

Exterior

Case
In 18k 5N red gold with convex synthetic sapphire crystal
Transparent back with 2 convex synthetic sapphire crystals
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
Diameter: 43.50 mm
Height: 13.65 mm (height on synthetic sapphire dome: 16.03 mm)
Water-resistance: 3 atm – 30 m – 100 ft (standard NIHS 92-20/SN ISO 22810:2010)

Crown
In 18k 5N red gold with engraved and black lacquered GF logo

Dial
Multi-level in gold, black-anthracite or silvered colour with engraved and “oven fired” enameled indexes (émail grand feu champlevé)
Gold GF logo

Hands
Hours, minutes and small seconds in polished gold (black-anthracite dial) or in polished blued steel (silvered dial), hand-polished countersinks
Power-reserve in blued polished steel

Strap and clasp
Hand-sewn alligator
18k 5N red gold pin buckle, hand-engraved with the GF logo