{"product_id":"gronefeld-1941-quadrivium-platinum","title":"Grönefeld 1941 Quadrivium Platinum | LE28 | Pre-Order","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Grönefeld 1941 Quadrivium Platinum is an exceptional high-end mechanical watch that unites four defining complications within the Maison’s unmistakable 1941 case design. Crafted in platinum and measuring 40 mm in diameter and 11.3 mm thick, the watch features a one-minute flying tourbillon, 7.5-second remontoire, central jumping seconds, and a 50-hour power reserve indicator. Its sophisticated dial pairs a finely frosted surface with hand-beveled stainless steel components and polished white gold hour markers, complemented by heat-blued steel hands. The result is a highly architectural display in which the movement’s most fascinating mechanisms remain visible from the front, including the raised flying tourbillon at 6 o’clock and rotating remontoire governor at 9 o’clock. \u003cem\u003e(Photos shown are of the tantalum edition)\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003e\u003cstrong\u003eAlso available in \u003c\/strong\u003e\u003c\/em\u003e\u003cem\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.osterjewelers.com\/products\/gronefeld-1941-quadrivium-platinum\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/www.osterjewelers.com\/products\/gronefeld-1941-quadrivium-tantalum\" rel=\"noopener\" target=\"_blank\"\u003etantalum\u003c\/a\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003ePrice is € 310,000\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003cstrong\u003e\u003cem\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\u003eDeveloped specifically for the Quadrivium, the hand-wound Grönefeld Calibre G-09 comprises 473 components and uses twin coaxial barrels connected in series to deliver a stable flow of energy throughout its 50-hour reserve. Its dedicated dead-seconds mechanism regulates the central jumping-seconds hand independently of the movement’s natural 3 Hz frequency, while a satellite-wheel system provides the power reserve indication. The open sapphire caseback reveals meticulous haute horlogerie finishing across the ruthenium-plated main plate and hand-beveled stainless steel bridges. Limited to 28 pieces, the Grönefeld 1941 Quadrivium Platinum combines precious-metal watchmaking, advanced complications, and the meticulous craftsmanship that defines exceptional independent Swiss watchmaking.\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 platinum 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\u003eCrown\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":50522160267489,"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-platinum","provider":"Oster Jewelers","version":"1.0","type":"link"}