GRONEFELD – 1941 Quadrivium Remontoire Tourbillon Tantalum or Platinum Edition 2026
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Grönefeld Unveils the 1941 Quadrivium:
A New Masterpiece by the Horological Brothers
After years of sustained demand for several of its most celebrated and now discontinued timepieces, including the One Hertz, Parallax Tourbillon and Remontoire, Bart and Tim Grönefeld proudly introduce a new pinnacle of complicated high horology: the Grönefeld 1941 Quadrivium.
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Developed entirely from the ground up, the 1941 Quadrivium brings together four of the independent watchmaker’s most admired complications in a single, extraordinary timepiece: a 7.5-second remontoire, a one-minute flying tourbillon, central jumping seconds, and a power-reserve indicator.
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The movement is equipped with serially connected concentric twin barrels, providing the energy required to drive this exceptionally complex mechanism.
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The result is a technical and artistic achievement that has already earned an affectionate nickname among those who have encountered it: “Grönefeld’s Greatest Hits.”
Four Disciplines, One Exceptional Timepiece
The name Quadrivium originates in classical scholarship, where arithmetic, geometry, music and astronomy were regarded as four foundational disciplines forming an integrated whole.
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At Grönefeld, the name alludes to the four mechanical complications that define this new creation.
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The 1941 Quadrivium brings together the horological ideas and technical signatures associated with some of Grönefeld’s most acclaimed creations, while introducing them in an entirely new movement conceived specifically for this watch
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At 6 o’clock, a raised one-minute flying tourbillon provides a dramatic focal point. At 9 o’clock, an exposed governor rotates once every 7.5 seconds, visually revealing the operation of the remontoire.
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A large central jumping-seconds hand provides an unmistakable display of the seconds, while the 50-hour power-reserve indicator occupies the 10 o’clock position. Hours and minutes are displayed at 2 o’clock.
A Distinctive Expression of the 1941 Design
First introduced in 2016, Grönefeld’s 1941 case design has become an increasingly iconic element of the brand’s design language, shared by the Remontoire, Principia, Decennium and Grönograaf.
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The Quadrivium’s case measures 40.0 mm in diameter and 11.3 mm in height.
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The dial combines a finely frosted main surface with hand-beveled stainless steel elements and polished, multi-faceted white gold hour markers. Traditional blued steel hands complete the restrained yet highly detailed aesthetic.
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Collectors can choose from five different base colours for the dial. These colours will be announced on our website a few weeks after the launch.
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Turning the watch over reveals a sapphire exhibition case back, offering an unobstructed view of the elaborately finished movement and its 473 components.
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As with every Grönefeld creation, the architecture and finishing of the calibre are intended not merely to demonstrate technical sophistication, but to make the movement itself an integral part of the watch’s visual experience.
Limited Editions
The Premiere Edition is limited to 28 pieces, each featuring a case and buckle crafted from Tantalum. A further limited edition of 28 pieces is available with a case and buckle crafted from Platinum.
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The 1941 Quadrivium is priced at €280,000 in Tantalum and €310,000 in Platinum, excluding taxes.
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Deliveries of the Tantalum Première Edition are scheduled to commence in 2027.
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With the 1941 Quadrivium, Bart and Tim Grönefeld bring together several of the technical concepts that have defined their work over the years in a completely new expression of high-end watchmaking.
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Created in limited numbers and conceived for discerning connoisseurs who value both mechanical ingenuity and traditional hand-finishing, the 1941 Quadrivium embodies Grönefeld’s continuing pursuit of innovation, craftsmanship and horological excellence.
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The Grönefeld 1941 Quadrivium: four complications, one extraordinary expression of high-end watchmaking.
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TECHNICAL SPECIFICATIONS
Collection Grönefeld 1941 Quadrivium
Model: 1941 Quadrivium Remontoire Tourbillon Edition
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Première Edition: 28 pieces (in Tantalum)
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Platinum Edition: 28 pieces
Case
Material: Tantalum or Platinum
Diameter: 40.0 mm
Thickness: 11.3 mm
Crown: Engraved with “G” logo
Case back: Sapphire crystal exhibition back, engraved with the serial number and secured by eight security screws
Water-resistant to 3 atm - 30 meters - 100 feet
Dial
Dial: Frosted main dial with hand-bevelled stainless steel elements and polished, multi-faceted white-gold hour markers. Choice of five different base colours for the dial. To be announced on Grönefeld website
Hands: Hours and minutes, large counter poised seconds, power-reserve. All hands are steel and heat blued
- Tourbillon: One-minute stainless steel flying tourbillon at 6 o’clock
- Remontoire: 7.5-second remontoire with exposed governor at 9 o’clock
- Seconds: Central jumping seconds.
- Hacking seconds: Smooth tourbillon stop at the 60 seconds position
- Power reserve of 50 hours, displayed at 10 o’clock
- Time display: Hours and minutes at 2 o’clock, Central Jumping Seconds
Calibre G-09
Mechanical hand-wound movement; tourbillon, remontoire, dead seconds and power reserve indicator
Concentric twin barrels connected in series
Diameter: 32.0 mm
Thickness: 6.15 mm
Number of parts: 473
Number of jewels: 49, partially set in gold chatons
Barrels: Two coaxially arranged barrels connected in series toprovide a continuous and balanced energy supply
Tourbillon: One minute flying tourbillon cage made in stainless steel Durnico
Balance wheel: Titatium free sprung variable inertia balance wheel (10.0 mm diameter)
Frequency: 3 Hz, 21.600 vibrations/hour
Power reserve of 50 hours
A satellite-wheel mechanism provides a precise indication of the remaining power reserve
Balance spring: Phillips terminal overcoil curve; Geneva-style stud
Escapement: Swiss lever escapement
Finishing
Main plate: Spotted and snailed ruthenium plated brass
Bridges: Hand bevelled; stainless steel. Micro-blasted centre; circular grain on the top; relief engraved in the micro blasted surface
Indications
Small hours and minutes at 2 o’clock
Extra long jumping seconds hand at the center
Power reserve indicator at 10 o'clock
Visible flying tourbillon cage at 6 o’clock
Visible governor of the remontoire mechanism at 9 o'clock
Strap
Hand-sewn leather, 20mm-18mm (Tantalum) approximately 108 grams, including strap and buckle
Ostrich leather strap, 20mm-18mm (Platinum) approximately 120 grams, including strap and buckle
Tantalum or Platinum pin buckle, engraved with Grönefeld logo. 18mm
🔰Limited Editions to ✅ Only ❱❱❱ 28 pieces
🔴 Price: MSRP💰
EUR 280'000 in Tantalum
EUR 310'000 in Platinum
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Press releases - 2026
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