Double Tourbillon 30°1
greubel_forsey
Invention Piece 1
| Brand : | Greubel Forsey |
| Collection : | Double Tourbillon 30° |
| Model : | Invention Piece 1 |
| Nber of pieces : | 11 |
| Complement : | white gold |
PDF INDEX CARD
-
Brand : Greubel Forsey Collection : Double Tourbillon 30° Model : Invention Piece 1 Nber of pieces : 11 Complement : white gold List Price : On request Diameter : 43.5 mm Thickness : 16.64 mm Styles : High Horology Atypical Types : Hand-winding Calibre : GF 02N Complication : Power Reserve Indicator Tourbillon Small Seconds Case material : White gold Case peculiarity : Sapphire caseback Shape : Round Water-resistance : 30 meters Dial : Gold Display : Blue triangle (Minutes) Red triangle (Hours) Indexes : Arabic numerals Glass : Domed Sapphire Strap material : Alligator leather Strap color : Black Strap clasp : Folding buckle + More characteristics : Off-centred Double Tourbillon 30°
Outer Tourbillon 4-minute rotation indicator
Inner Tourbillon 60-second rotation indicator
Hours and minutes display
Movement
388 parts2 Tourbillon cages : 128 partsWeight of the two cages : 1.17 g38 jewels
Olive-domed jewels in gold chatonsPower reserve : 72 hoursFrequency :21 600 vibrations/hourSeries-coupled fast-rotating double barrels. equipped with a slip-spring
to avoid excessive tensionBalance wheel Free sprung balance with white gold mean-time screwsMain Plates Spotted and frosted nickel palladiumBridges frosted and gold-finished nickel silver
“Message from the Inventor Watchmakers” text in relief on a gold plateInvolute circle profileConical gearing with corrected profileInner TourbillonOuter Tourbillon
Raised polished engraving of the name of the Invention on a hand-punched backgroundGold security screwsHand-engraved individual numberHand-sewn strapFolding clasp engraved with the Greubel Forsey logo
DESCRIPTION
- Invention Piece 1
Honouring the first invention
The Invention Piece 1 embodies Robert Greubel and Stephen Forsey ’s wish to honour the Double Tourbillon 30° and to raise the bar yet another notch by opening up whole new vistas for their first major invention. Both the architecture of the movement and the display of information symbolise the four years of meticulous research that the inventor-watchmakers have devoted to developing the new mechanism.
In the Invention Piece 1, the creative Greubel Forsey twosome have rearranged the volumes and surfaces of the timepiece according to a new technical and aesthetic structure. The Double Tourbillon 30° is placed at the centre of a semi-circular hour and minute display, thereby visually reinforcing the link between the mechanism responsible for measuring the time and its “symbolic” indication.
The invention at the stage centre
In contrast to the Double Tourbillon 30°, the movement driving the Invention Piece 1 has been profoundly modified and as a consequence the double cage, shifted slightly to the left and distinctly higher. This freed up space to place the object of the invention at the very centre of the highly original hour and minute display. Two triangular indicators – a red one for the hours and a blue one for the minutes – enable the observer to follow the passing of time on the mechanism’s two concentric semi-circles.
To facilitate read-off, the 12-hour and 0-minute markers are aligned at the traditional 12 o’clock position.
Four different rotations
Magnificently evoking the mechanical genius of the Invention Piece 1, the various speeds of rotation of these different elements give an idea of the complexity of the mechanism: whereas the outer cage takes four minutes to perform a complete rotation and the inner cage just 60 seconds, the double hands turn in 24 hours for the hours display and two hours for minutes.
Around the Tourbillon and its indicators, the absence of a dial reveals the frosted nickel silver bridges coated with either red gold or palladium nickel and clearly visible on three distinct levels.
This opening provides a view of the concentric gearing, serving to drive the hour and minute indicators. The off-centred small seconds and power-reserve displays are reminiscent of a miniature solar system.
Message from the Inventors
While the case, with its signature Greubel Forsey lugs, is immediately recognisable, the Invention Piece 1 expresses its unique nature, and it is reinforced by an unexpected detail: engraved on a plate on the case back is a personalised message from the inventor-watchmakers that will forever accompany the owner of this exceptional timepiece.
A total of 388 parts contribute to the smooth running of the movement driving the Invention Piece 1, including 128 for the double cage that weighs just 1.17 grams.
The Invention Piece 1 is produced in a single edition comprising three versions of 11 watches each, a number (1+1) chosen for its symbolic value representing the Robert Greubel and Stephen Forsey partnership.
- Invention Piece 1
Honouring the first invention
The Invention Piece 1 embodies Robert Greubel and Stephen Forsey ’s wish to honour the Double Tourbillon 30° and to raise the bar yet another notch by opening up whole new vistas for their first major invention. Both the architecture of the movement and the display of information symbolise the four years of meticulous research that the inventor-watchmakers have devoted to developing the new mechanism.
In the Invention Piece 1, the creative Greubel Forsey twosome have rearranged the volumes and surfaces of the timepiece according to a new technical and aesthetic structure. The Double Tourbillon 30° is placed at the centre of a semi-circular hour and minute display, thereby visually reinforcing the link between the mechanism responsible for measuring the time and its “symbolic” indication.
The invention at the stage centre
In contrast to the Double Tourbillon 30°, the movement driving the Invention Piece 1 has been profoundly modified and as a consequence the double cage, shifted slightly to the left and distinctly higher. This freed up space to place the object of the invention at the very centre of the highly original hour and minute display. Two triangular indicators – a red one for the hours and a blue one for the minutes – enable the observer to follow the passing of time on the mechanism’s two concentric semi-circles.
To facilitate read-off, the 12-hour and 0-minute markers are aligned at the traditional 12 o’clock position.
Four different rotations
Magnificently evoking the mechanical genius of the Invention Piece 1, the various speeds of rotation of these different elements give an idea of the complexity of the mechanism: whereas the outer cage takes four minutes to perform a complete rotation and the inner cage just 60 seconds, the double hands turn in 24 hours for the hours display and two hours for minutes.
Around the Tourbillon and its indicators, the absence of a dial reveals the frosted nickel silver bridges coated with either red gold or palladium nickel and clearly visible on three distinct levels.
This opening provides a view of the concentric gearing, serving to drive the hour and minute indicators. The off-centred small seconds and power-reserve displays are reminiscent of a miniature solar system.
Message from the Inventors
While the case, with its signature Greubel Forsey lugs, is immediately recognisable, the Invention Piece 1 expresses its unique nature, and it is reinforced by an unexpected detail: engraved on a plate on the case back is a personalised message from the inventor-watchmakers that will forever accompany the owner of this exceptional timepiece.
A total of 388 parts contribute to the smooth running of the movement driving the Invention Piece 1, including 128 for the double cage that weighs just 1.17 grams.
The Invention Piece 1 is produced in a single edition comprising three versions of 11 watches each, a number (1+1) chosen for its symbolic value representing the Robert Greubel and Stephen Forsey partnership.
-
Brand : Greubel Forsey Collection : Double Tourbillon 30° Model : Invention Piece 1 Nber of pieces : 11 Complement : white gold List Price : On request Diameter : 43.5 mm Thickness : 16.64 mm Styles : High Horology Atypical Types : Hand-winding Calibre : GF 02N Complication : Power Reserve Indicator Tourbillon Small Seconds Case material : White gold Case peculiarity : Sapphire caseback Shape : Round Water-resistance : 30 meters Dial : Gold Display : Blue triangle (Minutes) Red triangle (Hours) Indexes : Arabic numerals Glass : Domed Sapphire Strap material : Alligator leather Strap color : Black Strap clasp : Folding buckle More characteristics : Off-centred Double Tourbillon 30°
Outer Tourbillon 4-minute rotation indicator
Inner Tourbillon 60-second rotation indicator
Hours and minutes display
Movement
388 parts2 Tourbillon cages : 128 partsWeight of the two cages : 1.17 g38 jewels
Olive-domed jewels in gold chatonsPower reserve : 72 hoursFrequency :21 600 vibrations/hourSeries-coupled fast-rotating double barrels. equipped with a slip-spring
to avoid excessive tensionBalance wheel Free sprung balance with white gold mean-time screwsMain Plates Spotted and frosted nickel palladiumBridges frosted and gold-finished nickel silver
“Message from the Inventor Watchmakers” text in relief on a gold plateInvolute circle profileConical gearing with corrected profileInner TourbillonOuter Tourbillon
Raised polished engraving of the name of the Invention on a hand-punched backgroundGold security screwsHand-engraved individual numberHand-sewn strapFolding clasp engraved with the Greubel Forsey logo