Presented for auction by Second Vintage This exceptional Omega Seamaster perfectly captures the transitional design language of the late 1960s and early 1970s, blending robust mechanical engineering with an elegant, highly wearable aesthetic. Housed in the distinctive tonneau-shaped case that defined an era of modernist watchmaking, this timepiece offers a sophisticated wrist presence. Powered by the legendary Caliber 565 movement, known among collectors for its durability and precision, this Seamaster represents a golden age of Omega production. The combination of a pristine sunburst dial, sharp case lines, and outstanding mechanical health makes this an incredibly compelling acquisition for both seasoned collectors and those seeking a timeless vintage daily wearer. Brand: Omega Model: Seamaster Reference Number: 166.067 Serial Number: 32989825 Movement: Automatic Caliber 565 Dial: Silver sunburst dial with applied indices, warm tritium lume plots, and exceptionally clean preservation Case Size: 35 mm (excluding the crown) Case Material: Stainless steel Production Year: 1970 Condition: Excellent vintage condition with a remarkably clean dial and sharp case geometry. Movement have been serviced and performs strongly. Dial and Hands The dial of this Seamaster is a masterclass in mid-century design, featuring a brilliant silver sunburst finish that remains exceptionally clean and visually striking. Close inspection reveals an incredibly well-preserved surface, free from significant moisture spotting, staining, or print loss. The dial is adorned with applied steel baton indices featuring stark black inserts, providing excellent legibility and contrast. The applied Omega logo stands proudly above the crisp, sans-serif "OMEGA AUTOMATIC" text, while the classic script "Seamaster" graces the lower half. At the outer edge of each index rest the original tritium lume plots, which have aged beautifully to a warm, earthy pumpkin tone, perfectly matching the "T SWISS MADE T" designation at the bottom. The steel stick hands also feature black inserts and matching tritium lume, showing only minor, honest surface oxidation visible under strong macro magnification, entirely consistent with the age of the timepiece. The framed date aperture at three o'clock features a stepped inner edge, adding subtle depth to the dial architecture. Case and Crystal The 35 mm stainless steel tonneau case exhibits strong, well-defined geometry, retaining the distinct separation between the brushed upper surfaces and the polished flanks. The integrated lug profile remains sharp and full, showing normal, honest signs of vintage wear including light surface scratches and handling marks, but no signs of heavy over-polishing. The polished bezel frames the dial beautifully, displaying minor hairline scratches consistent with careful use. The watch is fitted with a domed acrylic crystal that features the tiny, authentic Omega logo etched directly in the center, visible under careful magnification. The signed Omega crown features the classic scalloped edge and remains in excellent condition. Turning the watch over, the screw-down caseback displays the iconic Seamaster Hippocampus medallion in deep, crisp relief. Some superficial tool marks and scratches are present near the caseback notches, typical of vintage pieces, but the overall structural integrity and visual appeal of the case remain outstanding. The inner caseback correctly displays the reference number 166.067 and the case maker hallmark. Movement At the heart of this timepiece beats the renowned Omega Caliber 565, an automatic movement celebrated for its robust architecture and swan-neck regulator. The movement presents beautifully with Omega’s signature copper-toned plating shining brightly, showing no visible signs of corrosion or rotor rub. The bridge clearly displays the caliber engraving alongside the 24 jewels designation and the serial number 32989825, securely dating the production of this watch to circa 1970. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The timegrapher results indicate a superb performance of -5 to -8 seconds per day with strong amplitude, confirming the exceptional mechanical health of this classic caliber. Movement have been serviced and performs strongly. Strap The watch is paired with a handsome black leather strap featuring an embossed texture and contrasting white edge stitching. This period-correct style strap complements the black inserts of the dial furniture perfectly, offering a comfortable and highly versatile aesthetic ready for immediate wear. Condition This Seamaster is presented in excellent vintage condition. The dial is the clear standout, offering stunning preservation and highly attractive, even patina on the original tritium lume plots. The stainless steel case retains its factory-intended C-shape profile with honest, moderate wear that does not detract from its strong wrist presence. The presence of the original etched crystal and the exceptionally clean, high-performing Caliber 565 movement further elevate the collector grade of this piece. Dimensions The stainless steel case measures 35 mm in diameter, excluding the signed crown. The tonneau case design provides a broader stance on the wrist than traditional round cases of the same era, offering a substantial and highly wearable profile that feels perfectly proportioned by modern standards. Remarks Finding a vintage Seamaster with a dial this clean and a movement performing this strongly is becoming increasingly difficult. The visual balance of the silver sunburst dial against the black and steel accents, combined with the incredibly reliable Caliber 565, makes this watch an ideal candidate for anyone looking to add a foundational, high-quality Omega to their collection. History Introduced in 1948 to celebrate Omega's 100th anniversary, the Seamaster line was born out of the robust, water-resistant watches supplied to the British military during the Second World War. By the late 1960s, the collection had expanded to include a variety of case shapes, reflecting the shifting architectural trends of the era. The C-shape or tonneau case became a hallmark of this period, offering a more integrated, streamlined look while maintaining the rugged dependability the Seamaster name was built upon. Today, these transitional models are highly sought after for their perfect blend of mid-century elegance and everyday utility. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and very securely packaged, and shipped with tracking and insurance for your peace of mind. We ship via fast express service, with typical delivery in 1–4 business days (destination dependent). Note that with vintage watches, minor signs of wear, aging, or imperfections may be present and are considered normal for watches of this age. Please review all photos carefully before bidding. We strive to photograph each watch from multiple angles for the most accurate representation. The photos form an important part of the description. If there are any concerns of functionality or defects after delivery, make sure to contact us within 3 days of receiving the watch so we can assist you. As with all vintage watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: OME-OAS-0027