Omega Seamaster Aqua Terra – Black Teak Dial Reference: 231.10.42.21.01.003 Discontinued (2021) Price: $4250 + ship An elegant and timeless execution of the Seamaster Aqua Terra, featuring the highly sought-after black “Teak Concept” dial, inspired by the wooden decks of luxury sailboats. This reference represents the more traditional and understated side of the Aqua Terra collection and has since been discontinued, adding to its long-term desirability. This example is offered as a full set, complete with the original Omega wooden presentation box, manuals, and warranty accessories. The watch is fitted to its original stainless-steel bracelet sized to approximately 18 cm, and is in very good overall condition, showing only minimal signs of wear consistent with careful use. Key Details • Stainless steel case, 41.5 mm • Black teak-pattern dial with applied indices • Sapphire crystal (front and display caseback) • 150 meters / 500 feet water resistance • Original Omega stainless steel bracelet (approx. 18 cm) Movement – Master Co-Axial Explained This watch is powered by the Omega Caliber 8500 Master Co-Axial automatic movement. It is important to distinguish this from earlier standard Co-Axial movements: • Co-Axial movements feature Omega’s proprietary escapement for reduced friction and improved longevity. • Master Co-Axial movements, such as the Cal. 8500, go a significant step further. The Master Co-Axial Cal. 8500 incorporates: • A Si14 silicon balance spring • Advanced anti-magnetic materials throughout the movement • Magnetic resistance exceeding 15,000 gauss • Caseback engravings indicating “Si14” and “>15,000 gauss” These enhancements provide exceptional real-world durability, precision, and resistance to modern magnetic environments, far surpassing traditional mechanical standards. Condition • Very good overall condition • Minimal visible wear • Dial and hands excellent • Bracelet tight and well-kept Summary A discontinued, classically styled Aqua Terra with the desirable black teak dial, powered by Omega’s robust Master Co-Axial technology. A versatile luxury sports watch equally at home with a suit or casual wear, and an excellent example of Omega’s technical evolution prior to the Master Chronometer era.