Double Tourbillon 30° Edition Historique
| Brand : | Greubel Forsey |
| Collection : | Double Tourbillon 30° |
| Model : | Double Tourbillon 30° Edition Historique |
| Nber of pieces : | 11 |
| Complement : | Red gold |
| On sale : | 2010 |
PDF INDEX CARD
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Brand : Greubel Forsey Collection : Double Tourbillon 30° Model : Double Tourbillon 30° Edition Historique Nber of pieces : 11 Complement : Red gold On sale : 2010 List Price : 379 800 € Diameter : 44.50 mm Thickness : 16.11 mm Styles : Atypical High Horology Types : Hand-winding Calibre : GF 02e Calibre distinction : Hand-engraved Complication : Power Reserve Indicator Tourbillon 4-Minute Indicator Small Seconds Case material : Red gold Case peculiarity : Thin Sapphire caseback Red gold crown Shape : Round Water-resistance : 30 meters Dial : Gold Open Dial color : Gold-plated Charcoal Display : Polished gold hands Indexes : Baton-type Arabic numerals Gold applied Glass : Sapphire Domed Strap material : Alligator leather Strap color : Black Strap clasp : Folding buckle + More characteristics : Double Tourbillon 30°
Movement
Diameter: 36.40 mm
Thickness: 9.65 mm
303 parts
2 tourbillon cages: 130 parts
Weight of the two cages: 1.22 g
39 jewels
Olive-domed jewels in gold chatons
Power reserve of 72 hours
Rapid rotating twin barrels (1 turn in 3.2 hours). one of which is equipped with a slipping spring to avoid excess tension
Variable-inertia balance wheel with white gold mean-time screws
(10.70 mm diameter)
Frequency:
21 600 vibrations per hour
Balance spring:
Phillips terminal curve
Geneva-style stud
Main plates:
Nickel silver. circular graining. spotted with polished bevelling. nickel-palladium finish
Bridges:
Nickel silver. frosted. spotted with polished bevelling. nickel-palladium finish
Gearing:
Involute circle profile
Conical gearing with corrected profile
Double Tourbillon 30°
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
4-minute outer tourbillon rotation indicator
72-hour power reserve on a sector
Case
18-carat 5N red gold
Raised polished engraving Edition Historique on a hand-punched background
Gold security screws
Three-dimensional. variable geometry-shaped lugs secured with screws
Four 5N red gold engraved and hand-finished plates bearing text screwed to the caseband
Hand-engraved individual number on the caseback
5N red gold crown with engraved and black lacquered GF logo
Dial
18-carat gold dial
Three sapphire plates with 3D structured text
Gold plate with the individual number
Gold security screws
Sapphire 4-minute engraved indicator
Strap
Hand-sewn
18-carat 5N red gold folding clasp
Hand-engraved with the Greubel Forsey logo
Unique edition of 11 pieces in 5N red gold numbered from 165 to 175
DESCRIPTION
- Since the launch of The Double Tourbillon 30° in 2004, Greubel Forsey has released 3 lines based on this invention, namely : Contemporaine (which includes Vision and Secret models), Invention (which includes the Invention Piece 1 model) and Technique (the Double Tourbillon 30° Technique model).
The Double Tourbillon 30° Edition Historique
In the spirit of independence and exclusivity, Greubel Forsey decided in 2010 to end the Double Tourbillon 30° Contemporaine by creating two unique series, the “Edition Historique”:
• 11 pieces in 5N red gold, and
• 11 pieces in platinum.
The closure of the Double Tourbillon 30° Contemporaine is a strong symbol for the brand: This line is heavily steeped in history as it is the timepiece which launched the Greubel Forsey adventure and forms the foundation of legitimacy for the inventions that followed. The decision to cease the Double Tourbillon 30° Contemporaine after six successful years will also see Greubel Forsey channelling new energy in creating systems, inventions and to explore new avenues.
Beyond Invention
The complexity of this timepiece is not only limited to the tourbillon system, but is visible in other aspects including a new kind of dial. This exclusive gold dial integrates three sapphire-crystal plates. These complex insertions are engraved and enhanced by a 3D structured text.
The bezel with beveled relief gives an original look to this final edition, a new interpretation of the style of the earlier models while retaining the intrinsic design features of a Greubel Forsey timepiece.
Like the other Greubel Forsey timepieces, the Double Tourbillon 30° expresses the thinking of its creators. Visually, you will also discover the 3D structured text on the dial and engraved hand-decorated curved plates affixed to the sides of the case extolling the philosophy and skill of the inventor watchmakers.
Creativity, technicality and craftsmanship
Invented in the early nineteenth century for the pocket watch and virtually unchanged since, the tourbillon aims to eliminate the equilibrium difference of the balance spring caused by gravity. However, since the beginning of their adventure together, the inventor watchmakers Robert Greubel and Stephen Forsey have always sought to exceed the achievements of watch-making science, going further in the complexity and research to effectively improve the operation of the wristwatch.
They developed a tourbillon caged within a second cage, so that this new complication will permanently cancel the rate errors due to gravity, taking account of all the usual positions of a wristwatch. Called the Double Tourbillon 30°, precisely because of the angle that connects the two rotating cages, this patented system provides a decisive technological progress and marks a milestone in the history of watch-making.
- Since the launch of The Double Tourbillon 30° in 2004, Greubel Forsey has released 3 lines based on this invention, namely : Contemporaine (which includes Vision and Secret models), Invention (which includes the Invention Piece 1 model) and Technique (the Double Tourbillon 30° Technique model).
The Double Tourbillon 30° Edition Historique
In the spirit of independence and exclusivity, Greubel Forsey decided in 2010 to end the Double Tourbillon 30° Contemporaine by creating two unique series, the “Edition Historique”:
• 11 pieces in 5N red gold, and
• 11 pieces in platinum.
The closure of the Double Tourbillon 30° Contemporaine is a strong symbol for the brand: This line is heavily steeped in history as it is the timepiece which launched the Greubel Forsey adventure and forms the foundation of legitimacy for the inventions that followed. The decision to cease the Double Tourbillon 30° Contemporaine after six successful years will also see Greubel Forsey channelling new energy in creating systems, inventions and to explore new avenues.
Beyond Invention
The complexity of this timepiece is not only limited to the tourbillon system, but is visible in other aspects including a new kind of dial. This exclusive gold dial integrates three sapphire-crystal plates. These complex insertions are engraved and enhanced by a 3D structured text.
The bezel with beveled relief gives an original look to this final edition, a new interpretation of the style of the earlier models while retaining the intrinsic design features of a Greubel Forsey timepiece.
Like the other Greubel Forsey timepieces, the Double Tourbillon 30° expresses the thinking of its creators. Visually, you will also discover the 3D structured text on the dial and engraved hand-decorated curved plates affixed to the sides of the case extolling the philosophy and skill of the inventor watchmakers.
Creativity, technicality and craftsmanship
Invented in the early nineteenth century for the pocket watch and virtually unchanged since, the tourbillon aims to eliminate the equilibrium difference of the balance spring caused by gravity. However, since the beginning of their adventure together, the inventor watchmakers Robert Greubel and Stephen Forsey have always sought to exceed the achievements of watch-making science, going further in the complexity and research to effectively improve the operation of the wristwatch.
They developed a tourbillon caged within a second cage, so that this new complication will permanently cancel the rate errors due to gravity, taking account of all the usual positions of a wristwatch. Called the Double Tourbillon 30°, precisely because of the angle that connects the two rotating cages, this patented system provides a decisive technological progress and marks a milestone in the history of watch-making.
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Brand : Greubel Forsey Collection : Double Tourbillon 30° Model : Double Tourbillon 30° Edition Historique Nber of pieces : 11 Complement : Red gold On sale : 2010 List Price : 379 800 € Diameter : 44.50 mm Thickness : 16.11 mm Styles : Atypical High Horology Types : Hand-winding Calibre : GF 02e Calibre distinction : Hand-engraved Complication : Power Reserve Indicator Tourbillon 4-Minute Indicator Small Seconds Case material : Red gold Case peculiarity : Thin Sapphire caseback Red gold crown Shape : Round Water-resistance : 30 meters Dial : Gold Open Dial color : Gold-plated Charcoal Display : Polished gold hands Indexes : Baton-type Arabic numerals Gold applied Glass : Sapphire Domed Strap material : Alligator leather Strap color : Black Strap clasp : Folding buckle More characteristics : Double Tourbillon 30°
Movement
Diameter: 36.40 mm
Thickness: 9.65 mm
303 parts
2 tourbillon cages: 130 parts
Weight of the two cages: 1.22 g
39 jewels
Olive-domed jewels in gold chatons
Power reserve of 72 hours
Rapid rotating twin barrels (1 turn in 3.2 hours). one of which is equipped with a slipping spring to avoid excess tension
Variable-inertia balance wheel with white gold mean-time screws
(10.70 mm diameter)
Frequency:
21 600 vibrations per hour
Balance spring:
Phillips terminal curve
Geneva-style stud
Main plates:
Nickel silver. circular graining. spotted with polished bevelling. nickel-palladium finish
Bridges:
Nickel silver. frosted. spotted with polished bevelling. nickel-palladium finish
Gearing:
Involute circle profile
Conical gearing with corrected profile
Double Tourbillon 30°
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
4-minute outer tourbillon rotation indicator
72-hour power reserve on a sector
Case
18-carat 5N red gold
Raised polished engraving Edition Historique on a hand-punched background
Gold security screws
Three-dimensional. variable geometry-shaped lugs secured with screws
Four 5N red gold engraved and hand-finished plates bearing text screwed to the caseband
Hand-engraved individual number on the caseback
5N red gold crown with engraved and black lacquered GF logo
Dial
18-carat gold dial
Three sapphire plates with 3D structured text
Gold plate with the individual number
Gold security screws
Sapphire 4-minute engraved indicator
Strap
Hand-sewn
18-carat 5N red gold folding clasp
Hand-engraved with the Greubel Forsey logo
Unique edition of 11 pieces in 5N red gold numbered from 165 to 175