{"product_id":"arnold-son-constant-force-tourbillon-11-platinum","title":"Arnold \u0026 Son Constant Force Tourbillon 11 Platinum | LE11 | SOLD OUT","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe 2026 GPHG nominated Arnold \u0026amp; Son Constant Force Tourbillon 11 Platinum is the final expression of the Constant Force 11 collection, created to honor the historic connection between John Arnold and Abraham-Louis Breguet. Limited to just 11 pieces, this exceptional platinum tourbillon watch pairs a classically rounded 41.5 mm case with a solid gold dial featuring hand-executed tremblé guilloché. Crafted with a burin engraver, the irregular pattern evokes the fern-covered moors of Cornwall, the birthplace of John Arnold, while giving the dial an organic texture that makes each piece distinctly individual. A white opal subdial provides the hours and minutes, while the open dial reveals the constant force mechanism and one-minute tourbillon beneath an 18-karat gold bridge. The midnight blue alligator strap and platinum folding clasp complete this refined expression of haute horlogerie.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003e\u003cem\u003eA limited edition of 11 pieces\u003c\/em\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cem\u003e.\u003cbr\u003e\u003c\/em\u003e\u003c\/strong\u003e\u003cstrong\u003eRef. 1FCBX.Z01A.C0232X\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eAt the heart of the watch, the hand-wound Manufacture Calibre A\u0026amp;S5219 incorporates Arnold \u0026amp; Son’s patented constant force mechanism to maintain stable energy delivery throughout its impressive 100-hour power reserve. Positioned between the gear train and tourbillon, the system continuously regulates torque to support consistent timekeeping while also creating a true-beat seconds display through the blued anchor. The sapphire caseback reveals a movement whose architecture and finishing pay tribute to Breguet’s historic tourbillon regulator, including a delicate mirror-polished tourbillon cage and variable-inertia balance inspired by John Arnold’s chronometers. With its platinum construction, hand-guilloché dial, constant force complication, and historically inspired tourbillon movement, the Constant Force Tourbillon 11 Platinum is a rare collector’s watch that connects 18th-century chronometry with contemporary Swiss haute horlogerie.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003e\u003cbr\u003eTECHNICAL SPECIFICATIONS\u003cbr\u003e\u003c\/b\u003e\u003cstrong\u003eFunctions\u003c\/strong\u003e\u003cb\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/b\u003e- Hours \u0026amp; minutes\u003cbr\u003e- True-beat seconds\u003cb\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/b\u003e\u003cstrong\u003eMovement\u003c\/strong\u003e\u003cb\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/b\u003eA\u0026amp;S5219\u003cbr\u003e\u003cstrong\u003eCalibre Measurements\u003c\/strong\u003e\u003cbr\u003e- 33 mm diameter\u003cbr\u003e- 10.48 mm thickness\u003cbr\u003e\u003cstrong\u003ePower Reserve\u003cbr\u003e\u003c\/strong\u003e100 hours\u003cbr\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003cbr\u003e3 Hz \/ 21'600 vph\u003cbr\u003e\u003cstrong\u003eCase\u003c\/strong\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003ePlatinum (Pt 950)\u003cbr\u003e\u003cb\u003e\u003cspan\u003eMeasurements\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e- 41.5 mm diameter\u003cbr\u003e- 13.7 mm thickness\u003cbr\u003e\u003cb\u003e\u003cspan\u003eCrystal\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003eDomed sapphire with an anti-reflective coating on both sides\u003cb\u003e\u003cspan\u003e\u003cbr\u003eCaseback\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003eDomed sapphire with an anti-reflective coating on both sides\u003cb\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003cstrong\u003eDial\u003c\/strong\u003e\u003cbr\u003e- 18k yellow gold\u003cbr\u003e- Hand-engraved\u003cbr\u003e- Arnold \u0026amp; Son \"fern\" pattern\u003cbr\u003e\u003cstrong\u003eWater Resistance\u003c\/strong\u003e\u003cbr\u003e3 atm \/ 30 meters\u003cbr\u003e\u003cstrong\u003eSubdial\u003cbr\u003e\u003c\/strong\u003e- White opal\u003cbr\u003e- Concave\u003cbr\u003e\u003cstrong\u003eStrap\u003c\/strong\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e- Midnight blue alligator leather with black alligator leather lining\u003cbr\u003e- Folding platinum (Pt 950) buckle\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eOster Jewelers is Your Authorized Arnold \u0026amp; Son Retail Partner\u003c\/strong\u003e\u003c\/p\u003e","brand":"Arnold \u0026 Son","offers":[{"title":"Default Title","offer_id":50541525467361,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1126\/5924\/files\/Arnold_SonConstantForceTourbillon11Platinum.jpg?v=1790275863","url":"https:\/\/www.osterjewelers.com\/products\/arnold-son-constant-force-tourbillon-11-platinum","provider":"Oster Jewelers","version":"1.0","type":"link"}