Selling a Jacob & Co Astronomia Tourbillon

The Design That Defines the Astronomia

The Jacob & Co Astronomia Tourbillon stands as one of the most ambitious horological creations of recent decades, blending celestial mechanics with exceptional craftsmanship.

At its core the Astronomia Tourbillon presents a planetary display where the platform rotates on its axis every 10 minutes. Four arms extend from a central rotating platform, each carrying a function: a tourbillon cage, a time display, a globe representing Earth, and a Jacob-cut diamond. The case, typically in gold, is fitted with a sapphire crystal that reveals the mechanism from above.

Jacob & Co chose to suspend the movement rather than fix it traditionally, creating the illusion of weightlessness. The rotating platform drives the four satellite functions in constant motion, mimicking the solar system. A diamond usually forms one orbital arm, while the plate beneath is decorative rather than a further astronomical dial. Every element serves both technical and aesthetic purpose, resulting in a timepiece that feels more like a miniature planetarium than a conventional watch.

This three-dimensional approach demands exceptional engineering. The central rotation, the individual rotation of the tourbillon cage, and the precise gearing required to keep the time display readable while in motion represent multiple layers of innovation. Understanding these signature elements helps when preparing to document your own example.

Evolution Across Generations

The Astronomia first appeared in the early 2010s and quickly established Jacob & Co as a leader in haute horlogerie complications. Early versions focused on the core four-arm rotating mechanism, commonly with a diamond on one arm. Subsequent iterations introduced greater complexity, including further complications and, on some references, more elaborate orbital displays.

Later models expanded the concept with the Astronomia Sky, incorporating a star map on a rotating dome above the movement, and with other variants that added further celestial displays. Each generation refined the finishing and adjusted proportions while maintaining the fundamental planetary architecture. Limited editions frequently used new materials for the case or altered the colour palette of the orbital spheres.

Recognising which generation your piece belongs to matters because subtle differences in movement architecture, case construction and complication layering affect how specialists evaluate it. The original configuration, the Sky variant and the more recent iterations each carry distinct characteristics that should be clearly photographed and described.

Factors That Shape Assessment

Assessment begins with version identification. Different references within the Astronomia family vary in movement configuration, case construction, presence of additional complications such as the star map, and overall architecture. The precise combination determines how the piece is categorised.

Completeness plays a central role. The original case, any accompanying accessories, the correct crown and any specific tools supplied with that reference add to the overall picture. Missing elements are noted but do not prevent an evaluation from proceeding.

Condition receives careful attention under magnification. The specialist checks the case, caseback, engravings and movement. Even minor marks on highly polished surfaces or slight misalignment in the rotating platform can influence the assessment. The movement is observed for smooth operation of all axes and functions without hesitation or unusual noise.

Current demand for particular configurations also forms part of the consideration. Certain limited editions, material combinations and dial variations attract more interest than others at any given moment, though this naturally fluctuates.

Common Mistakes to Avoid

Many owners attempt to clean or polish the case and movement components before selling. The Astronomia’s complex geometry and delicate finishes mean that amateur polishing can introduce micro-scratches or alter the intended surface texture. It is far better to send the watch exactly as received so specialists can evaluate its true state.

Incomplete photography causes unnecessary delays. The valuation form requires clear, well-lit images from multiple angles: the full piece on a neutral background, close-ups of the caseback and any engravings, detailed views of the rotating platform from above and the side, the condition of the tourbillon cage, the state of the time display and any additional complications, plus the crown and strap or bracelet links. Poor lighting or out-of-focus images make accurate assessment difficult.

Assuming that only perfect examples are of interest is another frequent error. Watches with signs of wear from careful use are still evaluated on their own merits. The process exists to accommodate pieces in varying conditions rather than only those in unworn state.

Inherited or Gifted Pieces

Many Astronomia Tourbillons reach the market through inheritance or as gifts. In these situations owners often lack the original purchase documentation or full service history. This is entirely normal and does not prevent an offer. The physical piece itself provides the majority of the information required.

When a watch has been handed down, take time to photograph any accompanying items even if you are unsure of their relevance: any boxes, outer packaging, certificates, booklets or even handwritten notes. These details can help confirm provenance or reference without being essential to begin the process.

If the watch has not been worn for some time it may benefit from gentle external inspection only. Avoid opening the case or attempting to wind or set it. Simply capture clear images of its current condition and submit them. The subsequent inspection by our specialists will establish whether any servicing is advisable.

What to Photograph for the Valuation Form

High-quality photography forms the foundation of an accurate preliminary offer. Begin with several full views of the watch face-on, at a slight angle, and from the side to convey the three-dimensional presence of the rotating platform. Include the case from every direction, paying particular attention to the sapphire surfaces and any metal elements.

Next capture the caseback and all visible engravings or markings. Detail the tourbillon cage at rest and, if safe to do so, in motion. Photograph the Earth globe and each of the other orbital elements individually. The time display should be shown clearly at a known hour and minute for reference.

Include close-ups of the strap or bracelet, the crown and any signs of wear. If the watch comes with its original box, outer packaging or accessories, photograph these too. Natural daylight or soft, even artificial light works best. Avoid flash and reflections on the sapphire crystal. Submit the clearest images possible even if the watch shows signs of use.

The Inspection and Offer Process

Once the valuation form is completed and images received, an initial offer typically follows within minutes, available around the clock. This preliminary figure is based on the photographs and description supplied. If you choose to proceed, free and fully insured collection or postage is arranged at a time convenient to you.

Upon arrival the watch undergoes detailed inspection by our specialists using appropriate horological equipment. They verify the movement functions correctly across all rotating axes, assess the condition of every component, confirm the reference and generation, and note any restoration requirements. This inspection usually completes quickly.

A final offer is then prepared reflecting the verified condition and completeness. Should you accept, payment is made by bank transfer the same day. If the final offer is declined, the watch is returned to you free of charge and fully insured. At every stage the process remains discreet, with no obligation until you choose to proceed.

Selling Your Jacob & Co Astronomia Tourbillon to EncoreLuxe

The valuation form appears near the top of this page beneath the main image. Upload clear photographs of your Astronomia Tourbillon from all the angles described earlier, along with any notes about its history or accompanying items. Our team reviews the submission promptly and returns an initial indication, available at any hour.

On acceptance of the preliminary offer we arrange complimentary collection or postage using fully insured carriers experienced with high-value watches. Once the piece reaches our secure premises it receives thorough examination under laboratory conditions to confirm every aspect of its condition and operation. A final offer is communicated shortly afterwards.

When agreement is reached, funds transfer by bank the same working day. The entire journey from submission to payment is designed to be straightforward and respectful of the significance of such a timepiece. Should the verified condition lead to a revised offer that you prefer not to accept, we return the watch to you by the same insured method at no cost. The decision remains entirely yours throughout.

Common questions before selling

Do I need the original box and papers to sell my Jacob & Co Astronomia Tourbillon? No. While any accompanying items are welcome and can be photographed, they are not required to begin the valuation process.

What should I do if my Astronomia has not been serviced recently? Send it exactly as it is. Our specialists will assess its current mechanical state during inspection and factor this into the final offer.

How long does it take to receive an initial offer? Offers based on your submitted photographs usually arrive within minutes and remain available 24 hours a day.

Will you collect the watch from my home? Yes. We can arrange free, fully insured collection or you may post it using the prepaid service provided.

What happens if I decline the final offer after inspection? The watch is returned to you free of charge and fully insured. There is no obligation or fee at any stage.

Are all versions of the Astronomia Tourbillon considered? Yes. Every generation and variation is evaluated on its own merits, taking version, condition and completeness into account.