The history of this Ulysse Nardin Skeleton X
The House of Ulysse Nardin, founded in 1846 in Le Locle, built its reputation around the precision of navigation instruments. The Skeleton X, reference 1712-139, marks a milestone in the technical evolution of the manufacture by offering a reinterpretation of skeletonisation. This model was designed to eliminate the traditional dial in order to provide a direct view of the movement’s architecture. The dial structure forms an X, linking the four cardinal points and integrating the hour markers into the overall design. This geometry is not merely aesthetic; it helps reinforce the entire mechanism while maintaining maximum transparency. A key technical element distinguishes this creation: the integration of silicon components within the escapement. This technology, of which the Swiss manufacture was one of the earliest adopters, ensures long-term stability of performance. The design of this piece answers the expectations of collectors seeking a watch that is both technical and legible, while respecting the codes of contemporary haute horlogerie.
Case, calibre and strap of this Skeleton X
The 43 mm case is a hybrid construction combining two distinct materials. The 18k rose gold middle case provides a warm-toned foundation, while the bezel and internal bridges in black DLC-treated titanium create a striking technical contrast. This choice highlights the central mechanics. The dial is absent, revealing the UN-171 manufacture movement, a hand-wound calibre delivering a 96-hour power reserve. At 6 o’clock, the rotating tourbillon forms the regulating organ of the watch. Its cage, completing one full rotation per minute, is fully visible and allows observation of the balance wheel in motion. The hours are indicated by four Roman numerals integrated into the X-shaped structure. The two central sword-shaped hands, treated in dark grey, incorporate luminous material to facilitate time reading. The whole is fitted with a black alligator leather strap secured by a rose gold folding clasp, harmonising the materials of the case and fastening system. The sapphire crystal, enhanced with an anti-reflective coating, ensures a clear view of the gear train without compromising legibility through unwanted reflections.
Why this Ulysse Nardin watch
Owning a Skeleton X means integrating a technical piece distinguished by its modern approach to watch construction. Unlike more traditional models, this reference offers complete visibility of the internal workings, making calibre UN-171 the very heart of the wrist-worn experience. The rarity of this configuration, combining rose gold and DLC titanium, makes it a sought-after piece on the pre-owned market. At The Swiss Collector, this watch represents an opportunity to acquire a manufacture creation available immediately, a characteristic specific to our selection. The balance between the complexity of the tourbillon and the sobriety of the materials ensures this piece a lasting place within a horological collection, without relying on passing trends.
Delivered contents and condition
This watch is a complete set including its original box, technical booklets and warranty card. Its provenance, linked to internal manufacture sales, guarantees rigorous traceability. The condition of this watch is that of a piece fresh from the factory. It has never been worn and retains its factory protective stickers on the lugs and folding clasp. This level of preservation ensures that the future owner receives the piece in its original condition. No servicing or polishing is required, as the watch remains in an absolute state of preservation.
Warranty and delivery
The Swiss Collector guarantees the authenticity of this piece. We provide a 24-month warranty and accept returns within 10 days under our conditions. As a leader in the second-hand market in Switzerland and backed by the largest boutique network, we offer online reservation for a fitting and in-store collection, or fully secured international shipping.
* Like new – new watch, never worn or in exceptional condition. No visible defects to the naked eye.
