Tudor 79830RB Black Bay GMT SS Black Dial UNWORN

Introduced in 2018, the Tudor Black Bay GMT reference 79830RB brought a true travel-time complication into the brand's flagship dive-inspired collection with unusual confidence and coherence. Its 41mm stainless steel case, paired here with a calfskin strap, combines the Black Bay family's gilt-accented vintage codes with a burgundy and blue 24-hour bezel that has become one of the model's defining signatures. The matte black domed dial, oversized screw-down crown, and snowflake handset connect the watch directly to Tudor's mid-century tool watch language while avoiding overt imitation. Power comes from the manufacture caliber MT5652, an automatic COSC-certified movement with an integrated GMT architecture, jumping local hour hand, date display, and approximately 70 hours of power reserve. That movement is a major part of the reference's importance, as it gave Tudor a genuinely competitive in-house flyer GMT rather than a modular or office-style solution. Collectors also value the robust 200-meter depth rating, which preserves the Black Bay's sporting credibility despite the added complication. The 79830RB was not issued as a country edition or boutique-exclusive limited edition, which has helped it become a widely recognized modern Tudor rather than a niche regional variant. Early production examples are especially discussed among enthusiasts because they mark the first chapter of Tudor's contemporary GMT program. Taken as a whole, the Black Bay GMT 79830RB stands as one of the most consequential modern Tudor references, combining strong everyday utility, recognizable design, and serious mechanical substance in a format that remains highly relevant to seasoned buyers. Unworn with Tudor box and papers dated 2020.