Black Double

Greubel Forsey Double Tourbillon 30° Edition Historique New Watch

To commemorate end of the Double Tourbillon 30° Contemporaine line at the end of 2010, Greubel Forsey has launched the exclusive Double Tourbillon 30° Edition Historique.

Greubel Forsey Double Tourbillon 30° Edition Historique features structured text on the dial and decorative hand-engraved plates on the sides of the case.

Since the debut of Greubel Forsey’s adventure in 2004, there have been three lines of the Double Tourbillon 30°: Contemporaine (Vision and Secret); Invention (Invention Piece 1); and Technique (Double Tourbillon 30° Technique). In 2010, Greubel Forsey will close the Double Tourbillon 30° Contemporaine line – thus ensuring its exclusivity – with this new Double Tourbillon 30° Edition Historique.

The complexity of this timepiece is visible in its intricate tourbillon system and gold dial with three sapphire crystal plates featuring the story of the Double Tourbillon 30° in structured three-dimensional text. Bevelled relief on the case side provides another distinctive feature.

The Edition Historique is available in two unique series of 11 pieces in 5N red gold and 11 pieces in platinum.

Greubel Forsey Double Tourbillon 30° Edition Historique Red Gold Version

Patented Movement

Movement dimensions

Diameter : 36.40 mm

Thickness : 9.65 mm

Number of parts

Complete movement : 303 parts

2 Tourbillon cages : 130 parts

Weight of the two cages : 1.17 g

Number of jewels 39

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 Variable-inertia with gold mean-time screws (10.70 mm diameter)

Frequency 21’600 vibrations/hour

Balance spring

Phillips terminal curve

Geneva-style stud

Main Plates Nickel silver circular graining and hand-bevelled, finished in “Nickel Palladium”

Bridges Nickel silver frosted and hand-bevelled, finished in “Nickel Palladium”

Gearing

Involute circle profile

Conical gearing with corrected profile

Inner Tourbillon : Inclined at a 30° angle, 1 rotation per minute

Outer Tourbillon : 1 rotation in 4 minutes

Hand-bevelled and openworked cage pillars

Gold counterweight

Displays

Hours and minutes

Small seconds

4-minute Outer Tourbillon rotation indicator

72-hour power reserve on a sector

Exterior

Case material and finishes

In 18k 5N red gold with convex sapphire crystal

Transparent back with convex sapphire crystal

Raised polished engraving of the name of the Invention on a hand-punched background

Gold security screws

Three-dimensional, variable geometry-shaped lugs

Four 5N red gold ingraved plates bearing text screwed to the caseband

Hand-engraved individual number on the caseback

Unique edition of 11 pieces in 5N red gold numbered from 165 to 175

Case dimensions

Diameter : 44.50 mm plates included, 43.50 on bezel

Thickness : 16.11 mm

Water resistance of the case 3 ATM – 30 M – 100 FT

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

Dial

18k gold dial, anthracite colour

Sapphire-crystal plates with 3D structured text

Hour markers in gold

Gold plate with the individual number

Gold security screws

Hours, minutes, small seconds, and power reserve in polished gold Sapphire 4-minute engraved indicator

Strap and clasp Hand-sewn black alligator.

18k 5N red gold folding clasp, hand-engraved with the Greubel Forsey logo

Greubel Forsey Double Tourbillon 30° Edition Historique Platinum Version

Patented Movement

Movement dimensions

Diameter : 36.40 mm

Thickness : 9.65 mm

Number of parts

Complete movement : 303 parts

2 Tourbillon cages : 130 parts

Weight of the two cages : 1.17 g

Number of jewels : 39

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 tensionBalance wheel Variable-inertia with gold mean-time screws (10.70 mm diameter)

Frequency 21’600 vibrations/hour

Balance spring

Phillips terminal curve

Geneva-style stud

Main Plates Nickel silver circular graining and hand-bevelled, finished in “Nickel Palladium”

Bridges Nickel silver frosted and hand-bevelled, finished in “Nickel Palladium”

Gearing

Involute circle profile

Conical gearing with corrected profile

Inner Tourbillon : Inclined at a 30° angle 1 rotation per minute

Outer Tourbillon : 1 rotation in 4 minutes

Hand-bevelled and openworked cage pillars

Gold counterweight

Displays

Hours and minutes

Small seconds

4-minute Outer Tourbillon rotation indicator

72-hour power reserve on a sector

Exterior

Case material and finishes

In platinum 950 with convex sapphire crystal

Transparent back with convex sapphire crystal

Raised polished engraving of the name of the Invention on a hand-punched background

Gold security screws

Three-dimensional, variable geometry-shaped lugs

Four platinum ingraved plates bearing text screwed to the caseband

Hand-engraved individual number on the caseback

Unique edition of 11 pieces in platinum numbered from 176 to 186

Case dimensions

Diameter : 44.50 mm plates included, 43.50 on bezel

Thickness : 16.11 mm

Water resistance of the case 3 ATM – 30 M – 100 FT

Crown Platinum with engraved and black lacquered GF logo

Dial

18k gold dial, anthracite colour

Sapphire-crystal plates with 3D structured text

Hour markers in gold

Gold plate with the individual number

Gold security screws

Hands

Hours, minutes, small seconds, and power reserve in polished gold

Sapphire 4-minute engraved indicator

Strap and clasp Hand-sewn black alligator.

Platinum folding clasp, hand-engraved with the Greubel Forsey logo

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