{"product_id":"gronefeld-1941-quadrivium-tantalum","title":"Grönefeld 1941 Quadrivium Tantalum | LE28 | Pre-Order","description":"\u003cp\u003e\u003cspan\u003eT\u003c\/span\u003e\u003cspan\u003ehe Grönefeld 1941 Quadrivium Tantalum brings four sophisticated complications together in an extraordinary expression of independent haute horlogerie. Housed in the Maison’s signature 1941 case, the 40 mm tantalum watch combines a one-minute flying tourbillon, 7.5-second remontoire, central jumping seconds, and power reserve indication in a completely new hand-wound movement. The finely frosted dial is framed by hand-beveled stainless steel elements and polished, multi-faceted white gold hour markers, while heat-blued steel hands add traditional watchmaking character. Each indication has a deliberate place on the dial, from the hours and minutes at 2 o’clock to the flying tourbillon at 6 o’clock and the visible remontoire governor at 9 o’clock, creating a compelling display of mechanical watchmaking.\u003cbr\u003e\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eAlso available in \u003c\/strong\u003e\u003c\/em\u003e\u003ca href=\"https:\/\/www.osterjewelers.com\/products\/gronefeld-1941-quadrivium-platinum\" rel=\"noopener\" target=\"_blank\"\u003e\u003cem\u003e\u003cstrong\u003eplatinum\u003c\/strong\u003e\u003c\/em\u003e\u003c\/a\u003e\u003cbr\u003e\u003cstrong\u003e\u003cem\u003ePrice is € 280,000\u003cbr\u003eClick \"Request More Info\" to inquire about pre-order availability and USD pricing.\u003c\/em\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA limited edition of 28 pieces\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt the heart of the 1941 Quadrivium is Grönefeld Calibre G-09, a 473-component movement featuring two coaxially arranged barrels connected in series for a balanced 50-hour power reserve. The dedicated dead-seconds mechanism allows the central seconds hand to advance in precise one-second intervals, while the flying tourbillon and exposed remontoire reveal the sophisticated mechanics at work. Through the sapphire exhibition caseback, collectors can admire extensive hand-finishing, including beveled stainless steel bridges, micro-blasted and circular-grained surfaces, and a ruthenium-plated main plate. Limited to just 28 pieces in tantalum, the 1941 Quadrivium Tantalum is a rare luxury watch for collectors seeking advanced complications, traditional hand-finishing, and the distinctive independent watchmaking of Grönefeld\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e.\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eTECHNICAL SPECIFICATIONS\u003c\/b\u003e \u003cbr\u003e\u003cstrong\u003eMovement\u003c\/strong\u003e\u003cbr\u003e- Calibre G-09\u003cbr\u003e- Mechanical hand-wound movement; tourbillon, remontoire, dead seconds and power reserve indicator\u003cbr\u003e\u003cstrong\u003eMeasurements\u003c\/strong\u003e\u003cbr\u003e- Diameter 32.0 mm\u003cbr\u003e- Thickness: 6.15 mm\u003cbr\u003e\u003cstrong\u003eComponents\u003c\/strong\u003e\u003cbr\u003e473 parts in the whole movement\u003cbr\u003e\u003cstrong\u003eJewels\u003c\/strong\u003e\u003cbr\u003e49 jewels, partially set in gold chatons\u003cbr\u003e\u003cstrong\u003ePower reserve\u003c\/strong\u003e\u003cbr\u003e- 50 hours\u003cbr\u003e- A satellite-wheel mechanism provides a precise indication of the remaining power reserve\u003cbr\u003e\u003cstrong\u003eBarrels\u003c\/strong\u003e\u003cbr\u003eTwo coaxially arranged barrels connected in series to provide a continuous and balanced energy supply\u003cbr\u003e\u003cstrong\u003eTourbillon\u003c\/strong\u003e\u003cbr\u003eOne minute flying tourbillon cage made in stainless steel Durnico \u003cbr\u003e\u003cstrong\u003eBalance wheel\u003c\/strong\u003e\u003cbr\u003eTitanium free sprung variable inertia balance wheel (10.0 mm diameter)\u003cbr\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003cbr\u003e21.600 vibrations\/hour\u003cbr\u003e\u003cstrong\u003eBalance spring\u003c\/strong\u003e\u003cbr\u003ePhillips terminal overcoil curve; Geneva-style stud\u003cbr\u003e\u003cstrong\u003eEscapement\u003c\/strong\u003e\u003cbr\u003eSwiss lever escapement\u003cbr\u003e\u003cstrong\u003eMain Plate\u003c\/strong\u003e\u003cbr\u003eSpotted and snailed ruthenium plated brass\u003cbr\u003e\u003cstrong\u003eBridges\u003c\/strong\u003e\u003cbr\u003eHand bevelled; stainless steel. Micro-blasted centre; circular grain on the top; relief engraved in the micro blasted surface\u003cbr\u003e\u003cstrong\u003eDead seconds\u003c\/strong\u003e\u003cbr\u003eA dedicated dead-seconds mechanism, positioned above the conventional going train, allows the escapement to operate at its natural frequency while regulating the seconds-hand to advance in precise one-second intervals\u003cbr\u003e\u003cstrong\u003eWinding-setting\u003c\/strong\u003e\u003cbr\u003eConventional winding and setting mechanism; hacking seconds at the 60 seconds position\u003cbr\u003e\u003cstrong\u003eCase\u003c\/strong\u003e\u003cbr\u003e- 1941 Design\u003cbr\u003e- Round, three-piece tantalum case featuring a domed sapphire crystal on the front, with anti-glare treatment on both sides\u003cbr\u003e- The flat sapphire crystal on the case back is also treated with anti-glare coating on both sides\u003cbr\u003e- The case is engraved with the serial number and secured by eight security screws\u003cbr\u003e\u003cstrong\u003eComponents\u003c\/strong\u003e\u003cbr\u003e- Case: 24 parts\u003cbr\u003e- Dial\/hands: 27 parts\u003cbr\u003e\u003cstrong\u003eMeasurements\u003cbr\u003e\u003c\/strong\u003e- 40.0 mm diameter\u003cbr\u003e- 11.3 mm thickness\u003cbr\u003e\u003cstrong\u003eWater resistance\u003c\/strong\u003e\u003cbr\u003e3 atmospheres - 30 meters - 100 feet\u003cbr\u003e\u003cstrong\u003eCrown\u003c\/strong\u003e\u003cbr\u003eEngraved with “G” logo\u003cbr\u003e\u003cstrong\u003eDial\u003c\/strong\u003e\u003cbr\u003eBase dial in brass, applied stainless steel segments and white gold hour markers. Choice of 5 colors\u003cbr\u003e\u003cstrong\u003eHands\u003c\/strong\u003e\u003cbr\u003eHours and minutes, large counter poised seconds, power-reserve. All hands are steel and heat blued\u003cbr\u003e\u003cstrong\u003eIndications\u003c\/strong\u003e\u003cbr\u003e- Small hours and minutes at 2 o’clock\u003cbr\u003e- Extra long jumping seconds hand at the center\u003cbr\u003e- Power reserve indicator at 10 o'clock\u003cbr\u003e- Visible flying tourbillon cage at 6 o’clock\u003cbr\u003e- Visible governor of the remontoire mechanism at 9 o'clock\u003cbr\u003e\u003cstrong\u003eStrap\u003c\/strong\u003e\u003cbr\u003e- Hand-sewn leather\u003cbr\u003e- 20mm-18mm\u003cbr\u003e\u003cstrong\u003eBuckle\u003c\/strong\u003e\u003cbr\u003e- Tantalum pin buckle engraved with Grönefeld logo. 18mm\u003cbr\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cbr\u003e~ 108 grams\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eOster Jewelers is Your Authorized Grönefeld Retail Partner\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Grönefeld","offers":[{"title":"Default Title","offer_id":50521960644833,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1126\/5924\/files\/Gronefeld1941QuadriviumTantalum.jpg?v=1790187126","url":"https:\/\/www.osterjewelers.com\/products\/gronefeld-1941-quadrivium-tantalum","provider":"Oster Jewelers","version":"1.0","type":"link"}