{"product_id":"case-693-tudor-black-bay-58-gmt-coke-ref-m7939g1a0nru-0001-2","title":"Case #693 — Tudor Black Bay 58 GMT “Coke” Ref. M7939G1A0NRU-0001","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cstrong\u003eCase #693 — Tudor Black Bay 58 GMT “Coke”\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eRef. M7939G1A0NRU-0001\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\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\u003e\u003cspan\u003eCase Notes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Black Bay 58 GMT gives Tudor’s travel-watch formula the proportions collectors had been waiting for.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt 39 mm wide and only 12.8 mm thick, it is considerably more compact than the original Black Bay GMT while retaining full GMT functionality. The defining visual feature is the bidirectional 24-hour bezel with its black-and-burgundy anodized aluminum insert, quickly earning the reference its enthusiast nickname: “Coke.”\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe domed black dial uses gilt-tone applied markers and warm accents that keep the watch firmly connected to the Black Bay family. A red GMT hand tracks reference time against the 24-hour bezel, while the local hour hand can be adjusted independently when traveling.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eInside is Tudor’s Manufacture Calibre MT5450-U, an integrated GMT movement certified by both COSC and METAS as a Master Chronometer. It offers approximately 65 hours of power reserve and avoids the added thickness of a modular GMT architecture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis example dates from 2024, the model’s launch year, 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\u003e\u003cspan\u003eAs a 2024 example, it retains meaningful coverage under Tudor’s five-year transferable guarantee, subject to the exact warranty-card date and Tudor terms.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Evidence\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eReference: M7939G1A0NRU-0001\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eModel: Black Bay 58 GMT\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eYear: 2024\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase: Stainless Steel, Polished and Satin Finished\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase Diameter: 39 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase Thickness: 12.8 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLug Width: 20 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDial: Domed Black with Gilt Applied Hour Markers\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrystal: Domed Sapphire\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBezel: Bidirectional 24-Hour Stainless-Steel Bezel with Black and Burgundy Anodized Aluminum Insert\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrown: Screw-Down with Tudor Rose\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement: Tudor Manufacture Calibre MT5450-U\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement Type: Automatic Integrated GMT\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCertification: COSC and METAS Master Chronometer\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower Reserve: Approximately 65 Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFunctions: Hours, Minutes, Central Seconds, GMT, Date, Independently Adjustable Local Hour\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eWater Resistance: 200 meters \/ 660 feet\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBracelet: Three-Link Rivet-Style Stainless Steel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eClasp: Tudor T-fit\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 Tudor Five-Year Transferable Guarantee, Subject to Exact Card Date\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIncluded: Box, Papers, and Cards\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCollector Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Black Bay 58 GMT is important because Tudor did more than simply shrink the earlier Black Bay GMT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe MT5450-U was engineered as an integrated GMT movement specifically suited to the smaller architecture, allowing Tudor to retain a genuine independently adjustable local-hour hand without turning the watch into an overly thick travel watch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThat mechanical work is what makes the proportions possible.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe black-and-burgundy bezel immediately gave the model an identity of its own, while the 39 mm case brought GMT functionality into the same size category that made the Black Bay 58 such an enthusiast favorite.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis 2024 example also comes from the model’s launch year, which gives it a particularly clear place in the Black Bay chronology.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesign Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Black Bay 58 GMT remains unmistakably Tudor.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe domed black dial, gilt details, Snowflake hour hand, aluminum bezel, and rivet-style bracelet all carry the vintage-inspired vocabulary that defines the Black Bay family.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe GMT elements add color without overwhelming the design.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBurgundy warms the lower half of the bezel, black keeps the upper half restrained, and the red GMT hand adds one functional accent across the dial.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt 39 mm and 12.8 mm thick, the watch also avoids the visual bulk associated with many modern mechanical GMTs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTechnical Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe MT5450-U is an integrated automatic GMT movement certified by both COSC and METAS.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt provides approximately 65 hours of power reserve and allows the local hour hand to be adjusted independently in one-hour increments while the reference-time hand continues to track home time.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThat is the practical definition of a true travel GMT.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTudor’s Master Chronometer certification also covers precision, magnetic resistance, water resistance, and power reserve after the movement has been cased.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe surrounding watch adds 200 meters of water resistance, a screw-down crown, domed sapphire crystal, and a bidirectional 24-hour bezel.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFrom the Case File\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Black Bay 58 GMT solves the biggest objection many buyers had to Tudor’s earlier GMT models: size.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt delivers a true jumping-hour GMT, date, rotating 24-hour bezel, 200-meter water resistance, and Master Chronometer certification in a compact 39 mm case.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCase 693 dates from the model’s launch year of 2024 and presents in Excellent Pre-Owned condition.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt includes its Box, Papers, and Cards and is currently sized for approximately a 7¾-inch wrist.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBuy with Confidence\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBST guarantees the authenticity of every watch we sell and provides a 30-day mechanical performance guarantee under normal use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAccuracy may vary with age and service history, and water resistance is not guaranteed unless specifically stated and pressure-tested.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBST Verdict\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA compact GMT with very little compromise.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 39 mm case, black-and-burgundy “Coke” bezel, integrated MT5450-U movement, true jumping local-hour function, T-fit bracelet, 65-hour reserve, and dual COSC\/METAS certification make the Black Bay 58 GMT one of Tudor’s strongest modern travel watches.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCase 693 adds a launch-year 2024 date, Excellent condition, complete BPC presentation, and remaining factory warranty to an already highly desirable configuration.\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":58667211063599,"sku":null,"price":4350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0948\/5359\/5439\/files\/BST_7106.jpg?v=1792189818","url":"https:\/\/bakerstreettimepieces.com\/products\/case-693-tudor-black-bay-58-gmt-coke-ref-m7939g1a0nru-0001-2","provider":"Baker Street Timepieces","version":"1.0","type":"link"}