The story behind this Ulysse Nardin Skeleton X
Since 1846, Ulysse Nardin has embodied a ceaseless quest for technical innovation, drawing on its roots in high-precision marine timekeeping. With the launch of the Skeleton X, reference 1712-139, the Le Locle-based manufacture has made a major stylistic break by reinterpreting the concept of traditional skeletonisation. Rather than simply hollowing out a dial, the engineers have designed an X-shaped architectural structure, symbolising the intersection between the brand’s maritime past and its technological future. This model meets the needs of collectors seeking a complete view of the movement, whilst retaining a rare structural elegance. The technical highlight lies in the pioneering use of silicon for the regulating components – a technology for which the Maison was one of the first advocates – enabling enhanced reliability and an optimised power reserve.
Case, movement and strap of this Skeleton X
This timepiece is distinguished by a 43 mm case combining the nobility of 18k rose gold with the technical sophistication of black DLC-coated titanium. The design plays on contrasting textures, alternating between satin-finished and sandblasted surfaces to create a striking visual balance. The dial – which, by definition, is absent – reveals the in-house UN-171 calibre movement. This hand-wound movement offers an impressive power reserve of 96 hours, ensuring extended running time. The X-shaped structure incorporates four Roman numerals, accentuating the bold geometry of the whole. The anti-reflective sapphire crystal protects this mechanical masterpiece whilst offering complete transparency. The watch is fitted with a black alligator leather strap, featuring a rose gold folding clasp, thus harmonising comfort on the wrist with the preciousness of the materials.
Why this Ulysse Nardin watch
The Skeleton X is a distinctive timepiece that is a must-have for any connoisseur of contemporary fine watchmaking. Its design, combining rose gold and black titanium, gives it a rare versatility, making it suitable for both formal and casual settings. The rarity of this particular example, sourced from an internal sale at the manufacture, presents an exceptional opportunity to acquire a timepiece with an impeccable pedigree. At The Swiss Collector, we value this watch not only for its avant-garde aesthetics, but also for its mechanical prowess, with the UN-171 calibre at the heart of the experience. It is an ideal choice for anyone seeking a balance between bold design and authentic horological craftsmanship.
Contents and condition
This watch is a complete set comprising its original box, technical booklets and warranty card. It comes directly from the manufacturer’s internal sales, ensuring full and transparent traceability. The condition of this timepiece is quite simply exceptional, having remained in its original packaging and never having been worn. The presence of the original protective covers on the lugs and the folding clasp attests to its exemplary preservation, thus offering the future owner the unspoilt pleasure of a watch straight from the factory.
Warranty and delivery
The Swiss Collector guarantees the authenticity of this timepiece. We offer a 24-month guarantee and accept returns within 10 days in accordance with our terms and conditions. As Switzerland’s leading second-hand retailer, backed by the largest network of shops, we offer online booking for a fitting and collection in-store, or fully secure international delivery.
* As new – a new watch, never worn or in exceptional condition. No defects visible to the naked eye.
