Selling a Greubel Forsey Tourbillon 24 Secondes

Understanding the Tourbillon 24 Secondes

If you own a Greubel Forsey Tourbillon 24 Secondes and are considering selling, the first question is usually how its particular example will be assessed.

The Tourbillon 24 Secondes represents a significant chapter in Greubel Forsey's approach to horology. Developed after the manufacture was founded, it features the brand's signature inclined tourbillon that completes one rotation every 24 seconds rather than the conventional 60 seconds. This faster rotation reduces the effects of gravity on the escapement's precision when the watch is in different positions, addressing a long-standing challenge in mechanical watchmaking.

Robert Greubel and Stephen Forsey founded their manufacture in 2004 after years spent restoring important timepieces and developing complications at other respected ateliers. The 24 Secondes model quickly became recognised for its architectural dial layout, which allows a clear view of the inclined tourbillon cage and the meticulously finished movement components. Every example reflects the founders' philosophy that true innovation must also respect traditional finishing techniques such as straight graining, beveling and black polishing.

The movement is entirely conceived and assembled by hand in the Greubel Forsey workshops in La Chaux-de-Fonds. Its design places emphasis on three-dimensional architecture, with bridges and plates finished to the highest standards. This combination of technical advancement and artisanal craft defines the piece and influences how each watch is evaluated. The inclined tourbillon is positioned at a 25-degree angle, a geometry intended to average positional errors more readily than a flat tourbillon.

Beyond its technical innovation, the watch embodies a deliberate restraint in its time-only display. Hours and minutes are shown with slender hands on a restrained dial, allowing the tourbillon to remain the visual focal point. This balance between complexity and legibility has made the model a reference point for collectors interested in modern haute horlogerie that prioritises mechanical purity over added complications.

Versions and Generations

Greubel Forsey produced the Tourbillon 24 Secondes in several distinct executions over the years. Early versions are most often seen in precious-metal cases, with a dial configuration that highlights the tourbillon at an angle of 25 degrees. Later executions introduced changes to case proportions and dial finishes, while keeping the inclined tourbillon at the centre of the design.

Distinguishing between generations requires careful attention to the caseback engraving, the style of the applied indices and the precise geometry of the tourbillon cage. Numbers have always been very small, in keeping with the manufacture's limited production. The materials chosen for the case, whether white gold, rose gold or platinum, also affect the overall character and assessment. The case metal affects weight and presence, and so forms part of how an individual example is assessed.

Movement numbers, case numbers and any accompanying documentation help establish provenance and originality. Variations in the finishing of the hands, the texture of the dial and the design of the crown all contribute to identifying the exact iteration. These details matter because they help place a watch among the small changes the manufacture introduced as the model evolved.

Sapphire crystals at the front and on the caseback allow a clear view of the dial and of the movement beneath. Dial finishes vary between examples, and the more elaborate hand-finished surfaces call for additional hours of skilled craftsmanship. Recognising these differences enables a more precise understanding of where a particular watch sits within the model's evolution.

Comparison with Related Models

The Tourbillon 24 Secondes sits alongside other Greubel Forsey tourbillon watches such as the Double Tourbillon 30°, introduced in 2004, and the Invention Piece series. While the 24 Secondes uses a single inclined tourbillon rotating every 24 seconds, the Double Tourbillon 30° employs two nested tourbillons with a different rotational speed and angle. This creates a distinct visual signature and mechanical behaviour, with the inner tourbillon rotating once per minute and the outer cage every four minutes.

The original Tourbillon 24 Secondes is generally more compact than the manufacture's larger multi-tourbillon watches. Its dial architecture places the tourbillon prominently yet leaves space for clear time indication, whereas some later designs adopt a more asymmetrical layout or further complications. These differences in scale, complication density and visual balance are key points of comparison when assessing relative rarity and appeal.

All share the same uncompromising approach to finishing and assembly, yet the 24 Secondes remains distinctive for its pioneering use of the 24-second rotation period in a wristwatch format. Understanding these relationships helps clarify why certain examples are sought after by collectors who appreciate the evolution of the brand's technical language. The 24 Secondes also differs from the later Tourbillon 24 Secondes Architecture, which reinterprets the concept with a more openworked, sculptural case design that exposes even more of the movement from multiple viewing angles.

In contrast to the simpler time-only 24 Secondes, some other models in the Greubel Forsey range add further major complications, increasing both the mechanical density and the time required for assembly and regulation. These added functions demand additional space within the case, often resulting in larger overall dimensions compared with the relatively wearable proportions of the core 24 Secondes. Such distinctions guide collectors when deciding which expression of Greubel Forsey's tourbillon philosophy best aligns with their preferences.

How Condition Affects Assessment

Condition remains one of the most important factors when evaluating a Greubel Forsey Tourbillon 24 Secondes. The case should be examined for any signs of polishing, dents or scratches, particularly around the lugs and bezel where wear is most visible. The dial and hands require close inspection for even the smallest imperfections, as the minimalist design leaves little room to conceal flaws such as spotting, tarnishing or misalignment.

The movement's finishing is exceptionally fine, with every bridge, screw and surface receiving detailed handwork. Any deviation from the original state, whether through service marks or replaced components, will be noted. The tourbillon cage itself must be checked for smooth operation and the integrity of its delicate construction.

Completeness also plays a central role. The presence of the original strap or bracelet, buckle, and any fitted accessories contributes to the overall evaluation. While papers and boxes are welcomed when available, the assessment can proceed without them provided clear photographs establish authenticity and condition. Demand for particular versions and materials further influences how each watch is considered, especially those produced in the earliest years of the reference.

Signs of careful ownership, such as minimal stretch on a bracelet or preserved edge sharpness on the case, add to the appeal. Conversely, evidence of improper handling can affect the evaluation. The state of the balance spring and the accuracy of any prior regulation are also reviewed, as these directly relate to the watch's ability to perform as intended by its makers. Every aspect is weighed to form a complete picture of the individual watch.

Photography for the Valuation Form

High-quality photographs are essential for an accurate initial assessment. Begin with overall views of the watch from several angles, ensuring even lighting that reveals the case profile, dial texture and tourbillon inclination without harsh reflections. Include close-ups of the dial at different positions to show the hands, indices and any applied markings under consistent illumination.

Photograph the case from above, the side and the back, paying particular attention to the engravings on the caseback and any serial or reference details. The specialist checks the case, caseback, engravings and movement. Capture the crown and its operation from multiple perspectives. If the watch has a bracelet or strap, include clear images of the clasp, links or buckle, noting any stretch or wear on the deployment mechanism.

Movement shots are especially important. Remove the caseback if possible and photograph the movement from several distances and angles, highlighting the finishing on the bridges, the tourbillon cage and the gear train. Include macro images of key areas such as the balance, jewels, screws and the intricate hand-engraved inscriptions. Any service records, certificates or documentation should also be photographed clearly, ensuring all text is legible.

Take photographs in natural daylight where possible, avoiding direct sunlight that creates glare on polished surfaces. A plain, neutral background helps the watch stand out. Multiple images of the tourbillon in different rotational positions demonstrate the mechanism's freedom of movement. These images allow specialists to identify the version, evaluate condition in detail and prepare a considered response promptly.

The Inspection Process

Once an offer is accepted and the watch arrives at our premises, it undergoes a thorough inspection by experienced specialists. This examination verifies the authenticity of every component, assesses the condition of the case, dial, hands and movement in detail, and confirms that the tourbillon functions as intended. The process typically takes a short time because the photographs have already provided a strong foundation for expectations.

We check for consistency between the movement number, case number and any visible engravings. The state of the finishing is compared against known examples of the same generation, paying attention to the uniformity of the black polish on flat surfaces and the sharpness of bevelled edges. Any previous service work is noted and its impact evaluated, including whether original components have been preserved.

Throughout the inspection the watch is handled with care in a controlled environment using appropriate tools and gloves to prevent any new marks. Should any discrepancy arise that was not visible in the photographs, we communicate promptly with full transparency. Our aim is to reach a fair and transparent conclusion based on the actual item received, respecting the exceptional standards maintained by Greubel Forsey.

The inspection also includes functional testing of the winding mechanism, time-setting and the smooth rotation of the tourbillon carriage. Any subtle variations in amplitude or rate are recorded. This meticulous approach ensures the assessment reflects the true state of the watch, allowing both parties to proceed with confidence.

Selling Your Greubel Forsey Tourbillon 24 Secondes to EncoreLuxe

The valuation form sits near the top of this page, directly beneath the main image for convenience. Complete it by uploading a comprehensive set of photographs that follow the detailed guidance provided earlier. Include any relevant background you may have about the watch's history or previous ownership. Our specialists review each submission with care and usually return an offer within minutes, available around the clock.

Should you choose to accept, we arrange free fully insured collection from your address or complimentary postage using secure, tracked shipping. The watch travels in protective packaging designed for delicate instruments. Upon safe arrival and successful completion of the inspection, payment is made by same-day bank transfer, providing immediate certainty.

If the physical watch presents details that differ from those shown in the photographs in a manner that materially affects the valuation, we explain the revised assessment without delay and offer the updated figure. You retain full discretion to accept or decline. Should you prefer not to proceed, the watch is returned to you by the same insured method at no cost whatsoever. The entire journey involves no fees and no commitment until you are entirely satisfied.

This structured yet flexible process has been developed specifically for owners of rare and important watches such as the Greubel Forsey Tourbillon 24 Secondes. It respects the significance of the piece while removing unnecessary obstacles, allowing you to explore a sale with minimal disruption to your routine. Every decision rests with you, supported by clear communication and specialist knowledge at each step.

Your questions answered

How quickly can I expect an offer for my Greubel Forsey Tourbillon 24 Secondes? Offers are usually prepared within minutes of receiving clear photographs through the valuation form, and the service operates 24 hours a day, seven days a week.

Do I need the original box and papers to receive an offer? No. While original documentation and accessories are welcome when available, they are not required to begin the process. Clear photographs are the essential starting point.

What happens if I change my mind after receiving an offer? There is no obligation to accept any offer. You may decline at any stage and we will return the watch to you free of charge and fully insured.

Which details most influence the assessment of this model? The specific generation, case material, overall condition, completeness of the presentation and the state of the movement finishing are all carefully considered during evaluation.

How should I photograph the tourbillon mechanism? Capture the cage from several angles with good lighting, include close-ups of the bridges and finishing, and show the mechanism both at rest and in operation where possible.

Is collection available for watches like the Tourbillon 24 Secondes? Yes. We offer free insured collection or postage throughout the United Kingdom once an offer has been agreed, ensuring the watch travels safely at every stage.