Offered in this auction by Second Vintage The Seikomatic line represents a golden era of Japanese watchmaking, combining elegant mid-century design with robust automatic calibers. This particular example stands out with its striking black dial and gold-tone accents, offering a sophisticated dress watch aesthetic that remains timeless. The recessed crown at four o'clock maintains the perfect symmetry of the case, a hallmark of Seiko's focus on automatic winding convenience and clean architectural lines. Brand: Seiko Model: Seikomatic Reference Number: 15035 Serial Number: 5100086 Movement: Automatic Caliber 603 Dial: Deep black dial with applied gold-tone indices, presenting in exceptionally clean condition with no visible blemishes Case Size: 36 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1965 Condition: Excellent vintage condition with a remarkably preserved dial and sharp case lines Dial and Hands The deep black dial is a visual standout, presenting an exceptionally clean surface free from notable spotting, moisture marks, or discoloration. It features applied gold-tone faceted hour markers that catch the light beautifully, complemented by the applied gold Seikomatic script logo. The printed text, including Diashock 20 Jewels and the signature eight-pointed star, remains crisp and fully intact. The matching gold-tone dauphine hands are sharp and well-preserved, showing only the faintest signs of natural aging under close inspection while maintaining their elegant profile. Case and Crystal The 36 mm stainless steel case retains excellent definition, showcasing sharp lug profiles and distinct transitions across its polished surfaces. Honest light handling marks consistent with careful vintage wear are present, but the case remains free from heavy impacts or excessive polishing. The recessed crown sits flush at the four o'clock position, preserving the elegant circular profile of the watch. The domed acrylic crystal is clear and provides an unobstructed view of the pristine dial beneath. The snap-on caseback features crisp and fully legible factory engravings, including the serial and reference numbers. Movement Inside beats the Seikosha Caliber 603, a 20-jewel automatic movement renowned for its durability and efficient winding system. The movement displays authentic vintage character with clear factory engravings on the rotor and mainplate. Performing well within expected vintage tolerances, running strong and steady. Timegrapher readings indicate a performance of +21 to +27 seconds per day. Strap The watch is fitted with a handsome black textured leather strap featuring contrasting white stitching. The strap complements the dark dial and polished steel case perfectly, securing with a classic stainless steel buckle. Condition This timepiece is in excellent vintage condition. The dial is exceptionally well-preserved, standing out for its flawless black finish. The case retains its architectural integrity with only minor age-appropriate surface wear, and the movement remains clean and operational. Dimensions The case measures 36 mm in diameter excluding the crown, offering a classic and highly versatile presence on the wrist suitable for a variety of sizes. Remarks A highly attractive configuration of the Seikomatic, blending a deep black dial with striking gold furniture in a sharp steel case. It is a superb representation of 1960s Seiko design philosophy, offering both visual impact and historical charm for the discerning collector. History Introduced in the early 1960s, the Seikomatic line was designed to showcase Seiko's advancements in automatic winding technology. The decision to recess the crown at the four o'clock position was both an aesthetic choice and a statement of confidence in the self-winding mechanism, implying to the wearer that manual winding was no longer necessary for daily use. These models laid the groundwork for many of the brand's most iconic automatic dress watches. 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: SEIEWB4RP0000