GREUBEL FORSEY – Tourbillon 24 Secondes Architecture Edition

 

GREUBEL FORSEY – Tourbillon 24 Secondes Architecture en Titanium Exclusive Edition 2022

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GREUBEL FORSEY "ARCHITECTURE":
A CITY ON THE WRIST

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The Tourbillon 24 Secondes Architecture is unlike any Greubel Forsey timepiece ever created. Its case is wholly atypical, its construction purposeful, its components sculptural, their mechanical interplay kinetic and the movement – simply spectacular! This new Greubel Forsey calibre within a new convex conical frustrum case shape represents a complete departure from traditional movement construction and aesthetics and brings an architectural experience to the wrist.

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History is made of continuous progress and, at times, clear ruptures. Fine Watchmaking is no exception, with 250 years of patiently accumulated achievements and, from time to time, breaches, upheavals or revolutions. Greubel Forsey initiated some of them with the Double Tourbillon 30°, the Quadruple Tourbillon, the Double Balancier and the Mechanical Computer of the QP à Équation, to name just a few.

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From an aesthetic point of view, its asymmetrical and convex case shapes, or its inclined escapements have opened up new paths in watchmaking design. But never before has Greubel Forsey taken the technical and aesthetic integration of one of its timepieces as far as it has with the Tourbillon 24 Secondes Architecture.

AN UNOBSTRUCTED VIEW

The new Tourbillon 24 Secondes Architecture is not easy to apprehend. Its components are suspended in space, revealing a harmonious composition of surfaces, shapes and movements. 

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The case showcases the spectacle within firstly through the large opening on the dial side, encompassed by relief-engraved Greubel Forsey values that inspired this creation: Architecture, Harmonie, Innovation, Technique, Bienfacture, Passion, Science, Exclusivité, Créativité.

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While the case looks perfectly round when observed from the dial side, it reveals its convex shape from other angles, along with its large synthetic sapphire crystal ring which envelopes the entire periphery of the caseband.

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Greubel Forsey has been integrating lateral sapphire crystal apertures since as early as 2007, but has never before rendered a movement visible from above, below, and from every angle around the caseband. This new case construction enables an exhaustive look at even the smallest detail of the movement, but also allows light to penetrate almost unhindered. 

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It is light which sculpts matter and reveals architecture in its intimacy, through a play of shadows and reflections. It bathes the movement to reveal it fully and in all of its complexity and is thus itself a vital contribution to the aesthetic of this exclusive timepiece.

A COMPLETELY NEW CASE CONSTRUCTION

In addition to its aesthetic contribution in showcasing the movement, the case offers a very unique experience on the wrist. Its convex shape profile ensures optimal ergonomics and wrist comfort. Pushing the envelope further still, Greubel Forsey has now conceived a case which is not only convex but also resembles a conical frustum in its geometry.

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In the Tourbillon 24 Secondes Architecture, the diameter around the caseback (47.05mm) is wider than it is around the bezel (45mm), thus combining the best of two worlds: It contains enough volume to fully showcase the movement architecture within, while at the same time giving the impression of being significantly smaller than it actually is. 

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Finally, the 50m water-resistant titanium case features three-dimensional, variable geometry lugs, hand-polished with hand-finished straight graining, flowing seamlessly into a rubber strap with embossed text and finished with a titanium folding clasp.

A MOVEMENT UNLIKE ANY OTHER

While the case represents a significant technical feat in its own right, the Greubel Forsey movement remains the star of the show. The polished titanium bridges immediately stand out from the frosted finish of the mainplate, and spectacularly so: emerging seemingly out of nowhere, they wind their way through the movement to finally impose themselves flush with the sapphire crystal. 

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At 6 o’clock, the Tourbillon 24 Secondes is moored from a large spherical and openworked bridge, whose base remains hidden by design. In its form, the inclined escapement defies gravity, while in its function, it compensates for it. 

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To solve the problem of critical positions of the oscillator in relation to gravity, the Tourbillon 24 Secondes uses a fast rotation speed in addition to a 25° inclination. These two elements combined contribute to excellent chronometric performance, especially in stable positions.

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The barrel bridge at 10 o’clock is sculpted similarly, with polished spherical surfaces, along with polished beveling and countersinks. 

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The barrel cover is engraved, lacquered and circular-grained and contains three coaxial series-coupled fast-rotating barrels, one of which is equipped with a slipping spring to avoid excess tension. 

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The caliber’s energy source provides 90 hours of chronometric power reserve, indicated by a moving red triangle over a conical disk at 3 o’clock. It too is held in place by a beautiful polished titanium bridge. 

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In the center, we find two large curved, openworked and polished steel hands, indicating the hours and minutes, mounted on a signature Greubel Forsey tripod bridge. 

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The time indication is completed at 8 o’clock by a small second on a cylinder with polished flanks – mirroring and echoing every other component in its vicinity

 AN EXCLUSIVE FUSION OF TECHNICITY AND AESTHETICS

The 354 parts of the movement are sculpted and arranged asymmetrically yet harmoniously, almost as if they had issued from an organic growth process found in the natural world. 

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Each component is suspended in an unexpected three-dimensional plane, yet it is exactly where it should be aesthetically, technically in relation to every other component. 

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The movement is vibrant and urban, yet it has space to breathe. The Tourbillon 24 Secondes Architecture is a marvel of contemporary design and a physical manifestation of the Greubel Forsey Art of Invention.

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The Tourbillon 24 Secondes Architecture will be limited to only 11 pieces in 2022, then to 18 pieces a year between 2023 and 2025 for a total of 65 exclusive timepieces overall.

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TECHNICAL SPECIFICATIONS

Collection: CONVEXE Tourbillon 24

Model:  Tourbillon 24 Secondes Architecture In titanium

 Hand-wound movement with 2 patents

Tourbillon 24 Secondes • hours and minutes • small seconds
• 24-seconds tourbillon rotation • power-reserve

Movement
Movement dimensions
• Overall diameter: 38.70mm
• Thickness: 12.35mm
Number of parts
• Movement: 354 parts
• Tourbillon cage: 86 parts
• Weight of the cage: 0.38g
Number of jewels • 42
• Olived-domed jewels in gold chatons Chronometric power reserve • 90 hours

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Barrels
• Three coaxial series-coupled fast-rotating barrels
(1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension
• Engraved pattern with Greubel Forsey, lacquered, circular-grained
Balance wheel
• Variable-inertia with gold mean-time screws (10mm diameter)
Frequency • 21’600 vibrations/hour
Balance springs
• Phillips terminal curve
• Geneva-style stud
Bridges and main plate
• Titanium
• Frosted, polished bevelling and countersinks
• Polished spherical bridges, polished bevelling and countersinks
• Three-dimensional centre bridge, frosted, polished bevelling and countersinks
Movement side
• Three-dimensional power-reserve bridge, frosted, polished bevelling and countersinks
• Tourbillon bridge, polished bevelling and countersinks, circular-grained
• Engraved pattern with individual number,circular-grained, straightgrained flanks
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
• Power reserve on a sector
• Tourbillon rotation 

Exterior

Case
• Titanium and synthetic sapphire crystal
• Three-dimensional, variable geometry bezel with raised engraved text
• Synthetic sapphire crystal over the entire periphery of the caseband
• Three-dimensional, variable geometry lugs, hand-polished with handfinished straight graining
• Transparent back with synthetic sapphire crystal
• Titanium security screws
• Raised engraving “Architecture 1” and “Greubel Forsey”
Case dimensions
• Caseband diameter: 47.05mm
• Bezel diameter: 45.50mm
• Height: 16.80mm
Water resistance of the case
• Water-resistant 5atm - 50 m - 164ft (standard NIHS 92-20/SN ISO 22810:2010)
Crown
• Titanium, polished and frosted, with GF logo
Dial side
• Three-dimensional, variable geometry hour-ring, indexes with Super-LumiNova
• Power-reserve indicator, circular-grained, engraved and lacquered
• Gold small second indicator, circular-grained, polished flank
• 24-seconds tourbillon rotation indicator
Hands
• Hours and minutes, curved profile, polished steel with Super-Luminova
• Small seconds, red triangle
• Power-reserve rack, circular-grained, polished bevelling, straight-grained flanks
• 24-seconds double-tipped, black anodised aluminium
Strap and clasp
• Non-animal material, rubber with text in relief, titanium folding clasp, engraved GF logo

Price  (without VAT), first pieces will be delivered this year.

Rubber strap – US 500,000 $ 💰


Limitation 
Limited Edition of 65 pieces.

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Press Release - 2022
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GREUBEL FORSEY SA
For further information: 
Communication Department 
press@greubelforsey.com – +41 79 194 2884
Eplatures-Grise -16 P.O. Box 670 
2301 La Chaux-de-Fonds - Switzerland
+41 32 925-4545
+41 32 925-4502
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