{"product_id":"case-624-omega-railmaster-ref-220-10-40-20-03-001","title":"Case #624 — Omega Seamaster Railmaster “Blue Denim” Ref. 220.10.40.20.03.001","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eCase #624 — Omega Seamaster Railmaster “Blue Denim”\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eRef. 220.10.40.20.03.001\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eStatus: Available\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCondition: Excellent Pre-Owned\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eScope: Box, Papers, and Cards\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCase Notes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Railmaster has always been one of Omega’s quieter professional watches.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOriginally conceived as a highly anti-magnetic tool watch, the modern Railmaster keeps that functional identity but packages it in a far more restrained form than the brand’s dive and chronograph lines.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis blue-dial configuration gives the formula considerably more personality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe vertically brushed “denim” dial shifts from deep navy to brighter washed blue depending on the light, while the warm central seconds hand and Railmaster text add just enough contrast to keep the dial from becoming monochromatic.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAt 40 mm, the proportions are exceptionally versatile. The brushed steel case and bracelet reinforce the tool-watch character, while the absence of a date keeps the dial balanced and uncluttered.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInside is Omega’s Co-Axial Master Chronometer Calibre 8806, offering approximately 55 hours of power reserve and resistance to magnetic fields up to 15,000 gauss.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis example dates from 2024 and presents in Excellent Pre-Owned condition. It includes its Box, Papers, and Cards and is currently sized for approximately a 7¾-inch wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBecause it dates from 2024, it remains within Omega’s five-year international factory warranty period, subject to the exact warranty-card date and Omega terms.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Evidence\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eReference: 220.10.40.20.03.001\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eModel: Seamaster Railmaster\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eYear: 2024\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase: Stainless Steel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase Diameter: 40 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThickness: Approximately 12.65 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLug-to-Lug: Approximately 47 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLug Width: 20 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDial: Vertically Brushed Blue “Denim”\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrystal: Domed Sapphire with Anti-Reflective Treatment on Both Sides\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBezel: Fixed Stainless Steel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrown: Screw-Down\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCaseback: Solid Steel, Wave-Edged Design\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement: Omega Co-Axial Master Chronometer Calibre 8806\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement Type: Automatic\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCertification: METAS Master Chronometer\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFrequency: 25,200 VPH\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eJewels: 35\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower Reserve: Approximately 55 Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFunctions: Hours, Minutes, Central Seconds\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAnti-Magnetism: Resistant to Magnetic Fields up to 15,000 Gauss\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWater Resistance: 150 meters \/ 500 feet\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBracelet: Stainless Steel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eClasp: Butterfly Clasp\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBracelet Fit: Approximately 7¾-inch wrist\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCondition: Excellent Pre-Owned\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFactory Warranty: Remaining Omega Five-Year Factory Warranty, Subject to Exact Card Date\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIncluded: Box, Papers, and Cards\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCollector Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Railmaster traces its roots to Omega’s professional-watch era of the 1950s.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt was created alongside watches such as the Speedmaster and Seamaster 300, but with a different mission: resistance to magnetic fields for engineers, technicians, and others working around electrical equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe modern Railmaster preserves that identity in a far more advanced form.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eRather than relying on a soft-iron inner cage alone, the Calibre 8806 itself is constructed to resist magnetic fields exceeding 15,000 gauss.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThat makes the anti-magnetic capability far more practical in daily life, where laptops, speakers, magnetic closures, and electronic equipment are considerably more common than they were when the original Railmaster appeared.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis blue “Denim” version is now discontinued, which gives it a different profile from Omega’s current Railmaster offerings.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDesign Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe dial is what makes this reference memorable.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOmega gave it a vertically brushed surface intended to evoke denim, with subtle tonal variation across the blue and restrained orange accents.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe finish changes significantly with lighting, moving from darker navy indoors to a much more vivid blue in direct light.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe brushed steel case and bracelet keep the watch grounded in tool-watch territory, while the lack of a date window preserves the clean symmetry.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAt 40 mm, it also lands in one of the most wearable sizes Omega has used for a contemporary sports watch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTechnical Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Calibre 8806 is a Master Chronometer-certified automatic movement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt uses Omega’s Co-Axial escapement, runs at 25,200 vibrations per hour, and provides approximately 55 hours of power reserve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMETAS certification tests the fully assembled watch for precision, magnetic resistance, power reserve, and water resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe movement’s resistance to magnetic fields of at least 15,000 gauss is particularly appropriate for the Railmaster name and gives the watch genuine technical continuity with its historical purpose.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFrom the Case File\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Railmaster is an unusually easy Omega to wear.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe 40 mm case is compact enough for daily use, the bracelet is fully integrated into the design, the dial is highly legible, and the 150-meter water-resistance rating provides more than enough capability for normal everyday wear.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThere is no date to reset after the watch has stopped, and the 55-hour reserve gives it reasonable flexibility in rotation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCase 624 presents in Excellent Pre-Owned condition, dates from 2024, includes Box, Papers, and Cards, and is sized for approximately a 7¾-inch wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIt also retains substantial Omega factory warranty coverage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBST Verdict\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA modern Omega that does not need a rotating bezel, chronograph pushers, or oversized case to make its point.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe blue “Denim” Railmaster combines a distinctive vertically brushed dial with a 40 mm steel case, Master Chronometer Calibre 8806, 15,000-gauss anti-magnetic capability, and 150-meter water resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCase 624 adds a 2024 date, Excellent condition, BPC, and meaningful remaining factory warranty to a discontinued Railmaster configuration that stands apart from the usual Seamaster choices.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEvery case deserves a closer look.\u003c\/span\u003e\u003c\/p\u003e","brand":"Baker Street Timepieces","offers":[{"title":"Default Title","offer_id":58493062512943,"sku":null,"price":3850.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0948\/5359\/5439\/files\/BST_6660.jpg?v=1789684096","url":"https:\/\/bakerstreettimepieces.com\/products\/case-624-omega-railmaster-ref-220-10-40-20-03-001","provider":"Baker Street Timepieces","version":"1.0","type":"link"}