{"product_id":"gronefeld-1941-principia-light-blue-dial-ss","title":"Grönefeld 1941 Principia Light Blue Dial SS","description":"\u003cp\u003e\u003cspan\u003eT\u003c\/span\u003ehe Grönefeld Principia combines refined proportions with the exceptional hand-finishing associated with the Dutch independent watchmaker. This stainless steel luxury watch features a light blue dial framed by polished hour markers and striking blued steel hands, creating an elegant contrast. Beneath the surface, the automatic G-06 calibre delivers approximately 56 hours of power reserve and features a distinctive 22K solid gold oscillating weight. The watch is housed in Grönefeld’s signature 1941 case, named in honor of the birth year of the brothers’ father, with its graceful lines and carefully considered proportions offering a sophisticated presence on the wrist.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThrough the sapphire crystal caseback, the Principia reveals an extensively hand-finished movement with Grönefeld’s characteristic stainless steel bridges, polished details, and solid gold rotor. Every calibre is individually assembled and finished by hand, with a numbered gold plate incorporated into the movement as a subtle acknowledgment of the craftsmanship behind each timepiece. Continuing a family watchmaking tradition that began in 1912, Bart and Tim Grönefeld have established a reputation for exceptional independent watchmaking that pairs traditional craftsmanship with innovative mechanical engineering, making the Principia a compelling expression of modern haute horlogerie.\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\u003cb\u003eCaliber\u003cbr\u003e\u003c\/b\u003eG-06\u003cbr\u003e\u003cb\u003eMovement dimensions\u003cbr\u003e\u003c\/b\u003e- Diameter: 32 mm\u003cbr\u003e- Thickness: 5.5 mm\u003cbr\u003e\u003cb\u003eNumber of parts\u003cbr\u003e\u003c\/b\u003e226\u003cbr\u003e\u003cb\u003ePower reserve\u003cbr\u003e\u003c\/b\u003e56 hours\u003cbr\u003e\u003cb\u003eNumber of jewels\u003cbr\u003e\u003c\/b\u003e31 jewels, partially set in solid gold chatons.\u003cbr\u003e\u003cb\u003eAutomatic system\u003cbr\u003e\u003c\/b\u003e- Uni-directional winding mechanism\u003cbr\u003e- For 24 hours of autonomy 633 rotations of the Oscillating mass are required.\u003cbr\u003e\u003cb\u003eOscillating mass\u003cbr\u003e\u003c\/b\u003e- Entirely decorated by hand\u003cbr\u003e- 22 karat solid gold\u003cbr\u003e- Pivoted on a high precision ceramic ball bearing to avoid excessive wear and the need of lubrication\u003cbr\u003e\u003cb\u003eBalance wheel\u003cbr\u003e\u003c\/b\u003eVariable-inertia balance wheel with four white gold timing screws (diameter 10 mm)\u003cbr\u003e\u003cb\u003eFrequency\u003cbr\u003e\u003c\/b\u003e21,600 vibrations\/hour\u003cbr\u003e\u003cb\u003eBalance spring\u003cbr\u003e\u003c\/b\u003eFree sprung with Phillips terminal over coil curve with triangle hairspring stud\u003cbr\u003e\u003cb\u003eEscapement\u003cbr\u003e\u003c\/b\u003eJewelled Swiss lever\u003cbr\u003e\u003cb\u003eMain plate\u003cbr\u003e\u003c\/b\u003eSpotted \u0026amp; ruthenium electroplated brass main plate\u003cbr\u003e\u003cb\u003eBridges\u003cbr\u003e\u003c\/b\u003eStainless steel, bevels polished by hand, micro-blasted center, circular grain on the top to highlight the bridges shapes and relief engravings\u003cbr\u003e\u003cb\u003eDisplays\u003cbr\u003e\u003c\/b\u003e- Central hours and minutes\u003cbr\u003e- Small seconds at 6 o'clock\u003cbr\u003e\u003cb\u003eCase dimensions\u003cbr\u003e\u003c\/b\u003e- Diameter is 39.55 mm with a thickness of 10.5 mm\u003cbr\u003e\u003cb\u003eWater resistance\u003cbr\u003e\u003c\/b\u003e3 ATM \/ 30 meters\u003cbr\u003e\u003cb\u003eMaterial\u003cbr\u003e\u003c\/b\u003eStainless Steel\u003cbr\u003e\u003cb\u003eCrown\u003cbr\u003e\u003c\/b\u003eCase matching material, engraved with The Horological Brothers Logo\u003cbr\u003e\u003cb\u003e\u003cspan\u003eDial\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003eLight blue coloured dial with a solid Sterling Silver 925 base material\u003cbr\u003e\u003cb\u003eHands\u003cbr\u003e\u003c\/b\u003e- Extended Lancette hands\u003cbr\u003e- Flame-blued steel and mirror polished centers\u003cbr\u003e- Small poised seconds hand\u003cbr\u003e\u003cb\u003e\u003cspan\u003eStrap\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003eBlue buffalo with orange stitching.\u003cbr\u003e\u003cb\u003eBuckle\u003cbr\u003e\u003c\/b\u003e- Pin buckle made in \u003cspan\u003eRed Gold Au750 5N\u003c\/span\u003e engraved with Grönefeld\u003cbr\u003e- 18mm\u003cbr\u003e\u003cb\u003eCrystals\u003cbr\u003e\u003c\/b\u003e- Domed sapphire crystal on the front with hard anti-reflective coating on both sides. Flat sapphire crystal on the back with hard anti-reflective coating on both sides\u003cbr\u003e\u003cb\u003eNumber of components\u003cbr\u003e\u003c\/b\u003e54 parts\u003cbr\u003e\u003cb\u003eTotal weight\u003cbr\u003e\u003c\/b\u003eRed gold 97 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":48995844391137,"sku":"25452","price":56900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1126\/5924\/files\/Gronefeld_1941_Principia_Light_Blue_SS.jpg?v=1787775406","url":"https:\/\/www.osterjewelers.com\/products\/gronefeld-1941-principia-light-blue-dial-ss","provider":"Oster Jewelers","version":"1.0","type":"link"}