{"product_id":"case-690-omega-aqua-terra-41-ref-231-10-42-21-03-003","title":"Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cstrong\u003eCase #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-pm-slice=\"1 1 []\"\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 Aqua Terra has always been Omega’s answer to the one-watch question, and this blue teak-dial generation is one of the references that explains why.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 41.5 mm stainless-steel case is paired with a rich blue dial cut with the vertical teak pattern that defined this era of Aqua Terra design. Applied markers, polished hands, and a framed date aperture at 3 o’clock keep the layout clean and highly legible, while the steel bracelet gives it enough presence to work as a true everyday sports watch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eInside is Omega’s Co-Axial Calibre 8500, a twin-barrel automatic chronometer movement with approximately 60 hours of power reserve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis example dates from 2017 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\u003eThe Evidence\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eReference: 231.10.42.21.03.003\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eModel: Seamaster Aqua Terra 150M\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eYear: 2017\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase: Stainless Steel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase Diameter: 41.5 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCase Thickness: Approximately 13 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLug Width: 20 mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDial: Blue Vertical Teak Pattern\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCrystal: Sapphire\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBezel: Fixed Stainless Steel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCaseback: Sapphire Exhibition\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement: Omega Co-Axial Calibre 8500\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMovement Type: Automatic\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCertification: Chronometer\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFrequency: 25,200 VPH\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eJewels: 39\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower Reserve: Approximately 60 Hours\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFunctions: Hours, Minutes, Central Seconds, Date\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\u003eBracelet Fit: Approximately 7¾-inch Wrist\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCondition: Excellent Pre-Owned\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\u003eThis generation of Aqua Terra sits at an important point in Omega’s modern development.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Calibre 8500 was one of the movements that established Omega’s modern in-house Co-Axial era, built around twin barrels, a 60-hour reserve, and a movement architecture designed specifically for the Co-Axial escapement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe watch around it remained deliberately versatile.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt carries enough polish to work in a professional setting, but 150 meters of water resistance, a screw-down crown, and a robust automatic movement make it far more capable than a conventional dress watch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesign Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe blue teak dial is the defining feature.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRather than using a flat sunburst finish, Omega cut the surface with vertical lines inspired by the wooden decks of sailing yachts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe result is a dial that changes substantially with the light, moving between navy, cobalt, and darker blue tones depending on angle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe polished indices and hands add contrast without overwhelming the texture, while the steel bracelet keeps the watch visually cohesive.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt 41.5 mm, the watch has meaningful wrist presence but remains balanced enough for regular daily wear.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTechnical Provenance\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Calibre 8500 is the technical centerpiece of this generation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt runs at 25,200 vibrations per hour and uses twin barrels to provide approximately 60 hours of power reserve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe movement is visible through the sapphire exhibition caseback and forms a meaningful part of the ownership experience.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 150-meter water-resistance rating also gives the watch genuine everyday capability, making it equally comfortable around the office, on the road, or near the water.\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 Aqua Terra works because it does not force the owner to choose between polished and practical.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe blue teak dial gives the watch visual character, while the steel bracelet, 150-meter rating, and 60-hour movement keep it useful.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCase 690 dates from 2017 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 particularly strong example of the pre-Master Chronometer Aqua Terra generation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe blue vertical teak dial, 41.5 mm steel case, Calibre 8500, 60-hour reserve, and 150-meter capability make the 231.10.42.21.03.003 a true all-purpose Omega.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCase 690 adds a 2017 date, Excellent condition, and complete BPC presentation to one of the most recognizable Aqua Terra configurations of its era.\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 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