{"product_id":"ultrathin-tourbillon-platinum-onyx-ltd-8","title":"Ultrathin Tourbillon Platinum Onyx LTD 8","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eA Study in Depth, Elegance and Chronometry\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAt the crossroads of refined minimalism and high-precision watchmaking, Arnold \u0026amp; Son unveils the Ultrathin Tourbillon Platinum Onyx—a timepiece that transforms the flying tourbillon into an expression of depth, contrast, and understated power.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHoused in a 41.5mm case crafted from 950 platinum, this limited edition of 8 pieces embodies the Maison’s chronometric heritage with contemporary restraint. Its broad dial fully exploits the intense black of onyx, creating a dramatic stage for the regulating organ at 6 o’clock and allowing the beauty of the tourbillon to emerge with striking clarity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eMechanical Refinement: The A\u0026amp;S8300 Calibre\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAt the heart of the Ultrathin Tourbillon Platinum Onyx beats the Calibre A\u0026amp;S8300, a manual-winding Manufacture movement developed by Arnold \u0026amp; Son. Measuring just 2.97mm thick, this ultra-thin calibre gives the watch its elegant profile while preserving the technical authority expected of a haute horlogerie creation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOperating at a frequency of 3 Hz and offering a remarkable 100-hour power reserve, the A\u0026amp;S8300 calibre reflects the Maison’s pursuit of chronometric excellence. Visible through the sapphire crystal caseback, it reveals refined finishing including radiating Côtes de Genève, chamfering, snailing on the two-barrel ratchet wheels, and polished, blued, and chamfered screws.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eThe Flying Tourbillon: A Regulating Organ in Motion\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePositioned at 6 o’clock, the large flying tourbillon becomes the visual and mechanical centre of the composition. Its delicate cage opens through the onyx dial, revealing the hand-bevelled architecture of a mechanism conceived to combine precision, lightness, and visual poetry.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIts symbolic details recall Arnold \u0026amp; Son’s maritime heritage: a stylised sextant evokes John Arnold’s role in advancing the calculation of longitude, while the anchor-shaped counterweight serves as a reference for reading the seconds as the cage completes its one-minute rotation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003eA Dial of Black Onyx: Mystery and Contrast\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe identity of the Ultrathin Tourbillon Platinum Onyx is expressed through the refined duality of its stone dial. The main dial is fashioned from a finely polished disc of genuine black onyx, selected for its intense, enigmatic depth and long-standing association with strength, power, and discernment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe concave hours-and-minutes sub-dial is also crafted from black onyx, but treated with a matt satin finish—a first in watchmaking according to the Maison. This subtle contrast between polished and matt stone brings texture, depth, and architectural balance to the display, while reinforcing Arnold \u0026amp; Son’s expertise in the art of working with ornamental stones.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"ARNOLD \u0026 SON","offers":[{"title":"Default Title","offer_id":57709334299007,"sku":"1UTBX.Z03A.C1375C","price":90200.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/9797\/8664\/files\/UltrathinTourbillonPlatinumOnyxLTD8.png?v=1780949862","url":"https:\/\/swissgallery.co.uk\/products\/ultrathin-tourbillon-platinum-onyx-ltd-8","provider":"Swiss Gallery UK","version":"1.0","type":"link"}