Greubel Forsey / Tourbillon 24 Secondes Architecture GF01H Final Edition
Key Highlights
- Final interpretation of the Tourbillon 24 Secondes Architecture calibre, limited to 11 timepieces within a five-year production of 66 pieces.
- Radically open construction where the 354-component movement becomes both dial and visual identity.
- Convex conical-frustum titanium case with full-periphery sapphire crystal for multi-angle views of the movement.
- Inclined 24-second tourbillon at 25° with an 86-part cage of 0.38 grams and a 90-hour chronometric power reserve.
- Final edition reinforces contrasts for greater legibility while preserving the purist, architecture-led philosophy.
An Architectural Chapter Comes to a Close
Unveiled in 2022, the Tourbillon 24 Secondes Architecture signalled a break from the idea of a movement hidden inside a case. The timepiece was conceived as a mechanical landscape, where each element plays a structural and visual role within a three-dimensional composition.
From the outset the calibre was fixed at a five-year production run and 66 timepieces. With 55 watches completed, Greubel Forsey now closes the chapter with the GF01H Final Edition, a series of 11. Rather than a redesign, it is a refined conclusion: the movement remains the watch, the architecture remains the dial, and the interplay of surfaces and voids continues to define the piece.
A Case Designed Around Light and Space
The convex conical-frustum titanium case, 47.05 mm at the caseband and 45.50 mm at the bezel, was engineered to maximise openness. Sapphire crystal around the full periphery turns the watch into a three-dimensional showcase, revealing the calibre from above, below and every lateral angle.
Light penetrates the interior to reveal depth, shadows and a range of finishes on the bridges and mainplate. Around the dial opening, engraved words such as Architecture, Harmonie, Innovation, Technique, Bienfacture, Passion, Science and Exclusivité form a manifesto, expressing the conditions under which the watch was conceived and finished.
The 24-Second Tourbillon at the Core
At 6 o’clock, an inclined tourbillon rotates once every 24 seconds at a 25° angle. This fast rotation and specific geometry are designed to serve chronometric stability while creating a constantly moving visual focal point within the open space of the movement.
The calibre comprises 354 components; the tourbillon cage alone includes 86 parts and weighs 0.38 grams. Three fast-rotating coaxial barrels deliver a 90-hour chronometric power reserve. Time is displayed by large openworked hands mounted on a tripod bridge, with a small seconds and a sector power-reserve indication completing the essential information.
Openness, Purity and Controlled Evolution
Polished spherical titanium bridges emerge from a frosted titanium mainplate, with central components appearing almost suspended. The layout exposes as much of the mechanics as possible while maintaining visual balance and a clear reading of the indications.
For the GF01H Final Edition, Greubel Forsey reinforces contrasts between surfaces to improve legibility and heighten the sense of depth. The aesthetic remains restrained: decoration, architecture and mechanics are effectively one, preserving the purist spirit of the original edition.
A Discreet Signal of Future Architectures
On the caseback, the engraving “Architecture 1” quietly suggests that this way of conceiving a watch as an architectural object may be explored again in other iterations. The GF01H Final Edition therefore acts as both conclusion and signal of intent.
By ending production of this calibre after five years and 66 examples, Greubel Forsey underscores its focus on finite, curated series. The last 11 watches present a more contrasted yet disciplined expression of the 2022 vision, in which the movement is fully exposed, fully legible and responsible for its own aesthetic identity.
Why It Matters
For connoisseurs in the GCC, the Tourbillon 24 Secondes Architecture GF01H Final Edition represents a closing chapter in a tightly limited, concept-driven calibre. Its architectural openness, advanced tourbillon construction and controlled production numbers speak to collectors seeking mechanical integrity and long-term significance.
Those wishing to follow future Greubel Forsey architectural creations can register their interest through authorised partners or via the maison’s official newsletter channels.
Frequently Asked Questions
What makes the Greubel Forsey Tourbillon 24 Secondes Architecture GF01H Final Edition different from the original release?
The Final Edition reinforces contrasts between surfaces to improve legibility and heighten the sense of depth, while preserving the purist, architecture-led philosophy of the original. Rather than a redesign, it represents a refined conclusion where the movement remains the watch and the architecture remains the dial.
How many of the GF01H Final Edition watches will be produced?
The GF01H Final Edition is limited to 11 timepieces, closing out the five-year production run that totalled 66 pieces of the Tourbillon 24 Secondes Architecture calibre.
How long does the power reserve last on this Greubel Forsey watch?
The Tourbillon 24 Secondes Architecture GF01H Final Edition offers a 90-hour chronometric power reserve, delivered by three fast-rotating coaxial barrels.
