Quadruple Tourbillon Secret

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Quadruple Tourbillon Secret

Brand  : Greubel Forsey
Collection  : Quadruple Tourbillon
Model  : Quadruple Tourbillon Secret
Reference  :
Nber of pieces : 8
Complement : Platinum
On sale : 2012

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  • Brand  : Greubel Forsey
    Collection  : Quadruple Tourbillon
    Model  : Quadruple Tourbillon Secret
    Reference  :
    Nber of pieces : 8
    Complement : Platinum
    On sale : 2012
    List Price : On request
    Diameter : 43.50 mm
    Thickness : 16.11 mm
    Styles : Atypical
    High Horology
    Types : Hand-winding
    Calibre : GF03j
    Calibre distinction : Circular Graining
    Complication : Tourbillon
    Small Seconds
    Power Reserve Indicator
    Case material : Platinum
    Case peculiarity : Sapphire caseback
    Three-dimensional variable geometry-shaped lugs
    Polished bezel and centre band with hand-finished straight graining
    Crown in platinum with engraved and black lacquered GF logo
    Gold security screws
    Shape : Asymmetrical
    Water-resistance : 30 meters
    Dial color : Silver
    Display : 4-minute and power-reserve in polished gold
    GGHour and minute and small second in black steel
    Indexes : Baton-type
    Arabic numerals
    Applied gold GF logo
    Glass : Domed
    Sapphire
    Strap material : Alligator leather
    Strap color : Black
    Strap clasp : Folding buckle
    + More characteristics : Movement
    63 jewels
    519 parts
    Diameter : 36.40 mm
    Thickness : 9.85 mm
    Olived-domed jewels in gold chatons
    Frequency :
    21 600 vibrations/hour
    Power reserve of 50 hours
    Rapid rotating twin barrels (1 turn in 3.2 hours). one of which is equipped with a slipping spring to avoid excess tension
    Free sprung variable-inertia balance with gold mean-time screws
    (10 mm diameter)
    Phillips terminal curve
    Geneva-style stud

    Main plates :
    Nickel silver
    Spotted with polished bevelling
    Straight-grained flanks
    Nickel-palladium treatment

    Bridges :
    Nickel silver
    Frosted
    Spotted with polished bevelling
    Nickel-palladium treatment
    Gold plate engraved with the individual number
    Two steel tourbillon bridges (movement side) : hand-bevelled. flat black polished with polished countersinks
    Two nickel silver tourbillon bridges
    (dial side)

    Gearing :
    Involute circle profile
    Conical gearing with corrected profiles

    Tourbillon
    Total weight of the cages : 2.35 g

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

    Outer tourbillons :
    1 rotation in 4 minutes
    Hand-bevelled and openworked cage pillars
    1 gold counterweight per double cage

    Case
    Platinum 950
    Lateral window with shaped synthetic sapphire crystal
    Hand-engraved individual number
    Raised polished engraving 'Quadruple Tourbillon' on a hand-punched background

    Dial
    Gold display sectors

    Strap
    Hand-sewn
    Platinum 950 folding clasp
    Hand-engraved with the Greubel Forsey logo

DESCRIPTION

  • Greubel Forsey presents the Quadruple Tourbillon Secret

    The Quadruple Tourbillon Secret represents a special link between Robert Greubel, Stephen Forsey and the collector. The ultimate refinement, this timepiece evokes to the passionate enthusiast the promise of an exceptional movement in which, a magical mechanical ballet plays out on a hidden stage visible only through the display back. The dial side redefines the expression of telling the time with its harmonious arrangement of multiple dials. Ultra-exclusive, the Quadruple Tourbillon Secret comes in a unique edition of eight pieces in 5N red gold and eight pieces in platinum.

    Conceal . . .

    The Quadruple Tourbillon Secret redetermines the expression of time which plays out its many paradoxes. A play of seduction in which fantastic mechanisms are subtly revealed by indications imperturbably bearing witness to their existence; a play in which a contemporary dynamic is created by overlapping curves within curves, in which symmetry gives way to asymmetry. 

    . . . to better reveal

    The ultimate in refinement, the ballet of the tourbillons is visible only through the synthetic sapphire crystal display back. This private micro-mechanical performance becomes a witness to the bond that unites the owner with the values of Greubel Forsey. A bond further strengthened by the precious exclusivity of the Quadruple Tourbillon Secret.

    The Quadruple Tourbillon

    This timepiece houses Greubel Forsey’s second fundamental invention, the Quadruple Tourbillon : a reliable high-performance mechanism comprising four tourbillons configured in independent pairs, which are linked by a spherical differential that averages out any timing errors between the two regulators. Particularly in stable positions, timekeeping accuracy is improved by the Quadruple Tourbillon.
  • Greubel Forsey presents the Quadruple Tourbillon Secret

    The Quadruple Tourbillon Secret represents a special link between Robert Greubel, Stephen Forsey and the collector. The ultimate refinement, this timepiece evokes to the passionate enthusiast the promise of an exceptional movement in which, a magical mechanical ballet plays out on a hidden stage visible only through the display back. The dial side redefines the expression of telling the time with its harmonious arrangement of multiple dials. Ultra-exclusive, the Quadruple Tourbillon Secret comes in a unique edition of eight pieces in 5N red gold and eight pieces in platinum.

    Conceal . . .

    The Quadruple Tourbillon Secret redetermines the expression of time which plays out its many paradoxes. A play of seduction in which fantastic mechanisms are subtly revealed by indications imperturbably bearing witness to their existence; a play in which a contemporary dynamic is created by overlapping curves within curves, in which symmetry gives way to asymmetry. 

    . . . to better reveal

    The ultimate in refinement, the ballet of the tourbillons is visible only through the synthetic sapphire crystal display back. This private micro-mechanical performance becomes a witness to the bond that unites the owner with the values of Greubel Forsey. A bond further strengthened by the precious exclusivity of the Quadruple Tourbillon Secret.

    The Quadruple Tourbillon

    This timepiece houses Greubel Forsey’s second fundamental invention, the Quadruple Tourbillon : a reliable high-performance mechanism comprising four tourbillons configured in independent pairs, which are linked by a spherical differential that averages out any timing errors between the two regulators. Particularly in stable positions, timekeeping accuracy is improved by the Quadruple Tourbillon.
  • Brand  : Greubel Forsey
    Collection  : Quadruple Tourbillon
    Model  : Quadruple Tourbillon Secret
    Reference  :
    Nber of pieces : 8
    Complement : Platinum
    On sale : 2012
    List Price : On request
    Diameter : 43.50 mm
    Thickness : 16.11 mm
    Styles : Atypical
    High Horology
    Types : Hand-winding
    Calibre : GF03j
    Calibre distinction : Circular Graining
    Complication : Tourbillon
    Small Seconds
    Power Reserve Indicator
    Case material : Platinum
    Case peculiarity : Sapphire caseback
    Three-dimensional variable geometry-shaped lugs
    Polished bezel and centre band with hand-finished straight graining
    Crown in platinum with engraved and black lacquered GF logo
    Gold security screws
    Shape : Asymmetrical
    Water-resistance : 30 meters
    Dial color : Silver
    Display : 4-minute and power-reserve in polished gold
    GGHour and minute and small second in black steel
    Indexes : Baton-type
    Arabic numerals
    Applied gold GF logo
    Glass : Domed
    Sapphire
    Strap material : Alligator leather
    Strap color : Black
    Strap clasp : Folding buckle
    More characteristics : Movement
    63 jewels
    519 parts
    Diameter : 36.40 mm
    Thickness : 9.85 mm
    Olived-domed jewels in gold chatons
    Frequency :
    21 600 vibrations/hour
    Power reserve of 50 hours
    Rapid rotating twin barrels (1 turn in 3.2 hours). one of which is equipped with a slipping spring to avoid excess tension
    Free sprung variable-inertia balance with gold mean-time screws
    (10 mm diameter)
    Phillips terminal curve
    Geneva-style stud

    Main plates :
    Nickel silver
    Spotted with polished bevelling
    Straight-grained flanks
    Nickel-palladium treatment

    Bridges :
    Nickel silver
    Frosted
    Spotted with polished bevelling
    Nickel-palladium treatment
    Gold plate engraved with the individual number
    Two steel tourbillon bridges (movement side) : hand-bevelled. flat black polished with polished countersinks
    Two nickel silver tourbillon bridges
    (dial side)

    Gearing :
    Involute circle profile
    Conical gearing with corrected profiles

    Tourbillon
    Total weight of the cages : 2.35 g

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

    Outer tourbillons :
    1 rotation in 4 minutes
    Hand-bevelled and openworked cage pillars
    1 gold counterweight per double cage

    Case
    Platinum 950
    Lateral window with shaped synthetic sapphire crystal
    Hand-engraved individual number
    Raised polished engraving 'Quadruple Tourbillon' on a hand-punched background

    Dial
    Gold display sectors

    Strap
    Hand-sewn
    Platinum 950 folding clasp
    Hand-engraved with the Greubel Forsey logo