Now available at auction from Second Vintage Embodying the optimistic, space-age design language of the late 1960s, this Omega Seamaster Cosmic is a masterclass in mid-century horological architecture. The Cosmic line represented a bold departure from traditional case designs, utilizing a robust front-loading unishell construction that provided superior protection against the elements while allowing for a sleek, streamlined profile. This particular example is elevated by its mesmerizing silver sunburst crosshair dial, a highly sought-after configuration that perfectly balances sporty legibility with refined elegance. Paired with its period-correct beads-of-rice bracelet and powered by a reliable manually wound Omega caliber, this timepiece offers collectors a remarkably well-preserved slice of Omega’s innovative heritage. Brand: Omega Model: Seamaster Cosmic Reference Number: 136.017 SP Serial Number: 28368926 Movement: Manual Winding Caliber 613 Dial: Silver sunburst crosshair dial with applied black-insert indices, in exceptionally clean and well-preserved condition Case Size: 35 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1969 Condition: Excellent vintage condition with a pristine dial and sharp case lines Dial and Hands The dial of this Seamaster Cosmic is a visual delight, featuring a radiant silver sunburst finish that catches the light beautifully from every angle. A precise black-printed crosshair divides the dial into quadrants, adding a sophisticated technical aesthetic. The hours are marked by applied, faceted steel batons featuring distinct black inserts, perfectly matched by the original steel stick hands which also carry black central stripes for optimal contrast. An applied steel Omega logo sits proudly below the twelve o'clock position, while the distinctive "Seamaster Cosmic" script is printed cleanly in the lower half. A framed date aperture is positioned at three o'clock. Upon close inspection, the dial remains in stunning condition, completely free of moisture damage, spotting, or prominent scratches, presenting a remarkably crisp and clean face that is increasingly difficult to find in watches of this vintage. Case and Crystal The 35mm stainless steel tonneau-shaped case, often referred to as a C-case, showcases Omega's innovative unishell design. The upper surfaces retain distinct radial brushing that transitions sharply into polished case flanks, indicating careful preservation over the decades. The watch is fitted with an acrylic crystal that protects the dial and sits cleanly within the smooth steel bezel. The original, signed Omega crown is present and properly knurled for easy winding. Turning the watch over reveals a pristine caseback adorned with a deeply engraved Seamaster hippocampus logo, surrounded by crisp "WATERPROOF" text and the specific "136017 SP - TOOL 107" engraving, denoting the front-loading tool requirement. The case remains in excellent vintage condition, exhibiting only honest, superficial handling marks consistent with careful wear, while retaining its strong factory geometry. Movement Accessed through the crystal via Tool 107, the watch is powered by the Omega Caliber 613, a robust manually wound movement featuring a quickset date function operated by pulling the crown to its second position. The movement is beautifully finished with Omega's signature copper-toned plating and is clearly stamped with the caliber number 613 alongside the serial number 28368926, dating production to approximately 1969. The bridge is proudly marked "OMEGA WATCH Co SWISS". Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. +14 to +20 s/d. Strap The watch is presented on a highly desirable stainless steel beads-of-rice bracelet, a hallmark of mid-century Omega elegance that drapes exceptionally well on the wrist. The bracelet features stamped 529 endlinks that fit the case profile securely. It is secured by its original fold-over clasp, which bears the embossed Omega logo. The bracelet remains in good vintage condition, showing expected moderate stretch from age and light desk-diving marks on the clasp, accommodating a wrist size of up to 17.5 cm. Condition This timepiece survives in excellent vintage condition. The dial is exceptionally clean and well-preserved, standing out as a premier feature of the watch. The stainless steel case retains strong, defined lines with clear transitions between brushed and polished finishes, showing only minor, age-appropriate wear. The movement is remarkably clean and functions beautifully. Dimensions The stainless steel case measures 35 mm in diameter, excluding the signed crown. The integrated lug design provides a substantial wrist presence, and the accompanying bracelet will comfortably accommodate a wrist size of up to 17.5 cm. Remarks Finding a Seamaster Cosmic with a crosshair dial in such pristine condition is a rare treat for vintage enthusiasts. The combination of the textured silver dial, the sharp unishell case, and the incredibly comfortable beads-of-rice bracelet makes this a versatile and highly collectible vintage Omega suitable for both daily wear and serious curation. History Introduced in 1967, the Seamaster Cosmic represented Omega's embrace of futuristic, space-age design trends. The defining feature of the Cosmic line was its unishell case, machined from a single block of steel. By eliminating the traditional removable caseback, Omega significantly reduced the points of entry for water and dust, enhancing the durability of the watch. The movement and dial were loaded entirely through the front of the case, requiring specialized tools for servicing. This innovative engineering, combined with striking dial variations, cemented the Cosmic's legacy as a bold and technically fascinating chapter in the long-running Seamaster family. 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-OSC-0004