{"product_id":"omega-chronograph-28-9-movement-screw-down-case-black-dial-chronograph-w3797","title":"Omega Chronograph 28.9 Movement Screw-down Case Black Dial","description":"\u003cp data-renderer-start-pos=\"138\"\u003eThe history of Omega SA began in 1848, when 23-year-old watchmaker Louis Brandt established a small workshop in La Chaux-de-Fonds, Switzerland. Over the following 175 years, Omega evolved from a modest atelier into one of the world’s most celebrated watch manufacturers, renowned for its achievements in precision timekeeping, space exploration, professional diving watches, and mechanical innovation.\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"138\"\u003e \u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"541\"\u003eAmong the brand’s most important early developments was the Omega Calibre 28.9 CHRO — Omega’s first compact wrist chronograph movement, produced in very limited numbers between 1932 and approximately 1943. Developed in collaboration with Lemania, where it was known as the Lemania 13CH, this groundbreaking 28.9 mm movement laid the foundation for Omega’s future sports and military chronographs, eventually evolving into the legendary Calibre 321 used in the first NASA-approved Speedmaster.\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"541\"\u003e \u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1035\"\u003eClosely related to the better-known Calibre 33.3, the 28.9 is considerably rarer, especially in a screw-back waterproof case configuration such as the present example.\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1035\"\u003e \u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1204\"\u003eThis particular watch is housed in a steel case with a screw-down case back and oversized pump pushers, giving it a strong and purposeful appearance.\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1204\"\u003e \u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1355\"\u003eThe glossy black dial is especially attractive, featuring two recessed sub-dials for the chronograph functions, a base-1000 scale, and a finely printed minute track. The clean, no-lume hands complete the design beautifully and give the watch an exceptionally elegant and balanced appearance.\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1355\"\u003e \u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1648\"\u003eThis historically important chronograph is fitted with a beautiful Bulang and Sons strap and has been fully serviced by our watchmaker.\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1648\"\u003e \u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1785\"\u003eAs a fascinating detail, we currently have another Omega Calibre 28.9 in stock with a movement number exactly one digit apart from this example — meaning the watches feature consecutive movement serial numbers. After handling thousands upon thousands of vintage watches over the years, this is something we have never encountered before.\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"1785\"\u003e \u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"2124\"\u003eTogether, these two watches represent an extraordinary opportunity for the serious collector: historically important Omega chronographs with rare movements, waterproof screw-back cases, outstanding overall condition, and an almost impossible-to-find consecutive serial relationship..\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"2124\"\u003e \u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"2409\"\u003eAn increasingly rare calibre housed in a beautifully balanced and highly wearable case.\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"2409\"\u003e \u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"2498\"\u003e\u003cem data-renderer-mark=\"true\"\u003eSpecifications:\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-renderer-start-pos=\"2515\"\u003e \u003c\/p\u003e\n\u003cul class=\"ak-ul\" data-indent-level=\"1\"\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2519\"\u003eOmega Chronograph\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2540\"\u003e35mm steel case with screw-down case back\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2585\"\u003eRare black dial, base 1000 scale\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2621\"\u003epump pushers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2637\"\u003eno lume leaf style hands\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2665\"\u003eCal. 28.9 hand wound movement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2698\"\u003eMovement Serial 938xxxx dating to the early 1940’s\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2752\"\u003eBulang and sons leather strap\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2785\"\u003eFully serviced by our watchmaker\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2821\"\u003eOne-year mechanical warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-renderer-start-pos=\"2853\"\u003eFree worldwide Fedex Priority shipping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Omega","offers":[{"title":"Default Title","offer_id":57973581545855,"sku":"W-3797","price":21900.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/0027\/8593\/files\/W-3797OmegaScrewdownMovementBlackdialchronograph_296_1x1_2a61ecc3-11a1-42a3-93db-7e016c18ca6c.jpg?v=1784113707","url":"https:\/\/bulangandsons.nl\/products\/omega-chronograph-28-9-movement-screw-down-case-black-dial-chronograph-w3797","provider":"Bulang and Sons NL","version":"1.0","type":"link"}