Offered in this auction by Second Vintage The Seikomatic line represents a golden era of Japanese watchmaking, characterized by elegant design and robust automatic movements designed for daily wear. This particular example exudes mid-century sophistication with its warm gold-tone case and beautifully preserved silver sunburst dial. A quintessential dress watch from the 1960s, it offers collectors a chance to own a piece of early Seiko automatic history with striking wrist presence and undeniable vintage charm. Brand: Seiko Model: Seikomatic Diashock Reference Number: 15015DE Serial Number: 2210411 Movement: Automatic Seikosha 20-jewel caliber Dial: Silver sunburst dial with applied gold-tone indices, presenting an exceptionally clean and evenly aged surface with minimal imperfections. Case Size: 36 mm (excluding the crown) Case Material: Gold plated with stainless steel caseback Production Year: 1962 Condition: Good vintage condition with honest wear to the gold plating and a remarkably crisp dial. Dial and Hands The dial is a stunning silver sunburst that plays beautifully with the light, offering a radiant backdrop for the dial furniture. It features applied gold-tone faceted baton indices that perfectly match the sharp, elegant dauphine hands. The typography is executed with precision, showcasing the classic cursive Seikomatic script below the applied gyro logo at the twelve o'clock position, with "Diashock 20 Jewels" cleanly printed above six o'clock. Fine factory text is visible along the very bottom edge of the dial. The dial condition is highly impressive for its age, remaining exceptionally clean with only the faintest signs of aging visible under close inspection. There are no significant spots, moisture marks, or surface damage, preserving a pristine mid-century aesthetic. The gold-tone hands remain sharp and free of heavy oxidation. Case and Crystal The 36 millimeter case features an extra gold-plated finish, showcasing classic 1960s dress watch proportions with slender, gently curved lugs. A signature design element of this era is the partially recessed crown located at the four o'clock position, emphasizing the convenience of the automatic movement. The gold plating displays honest vintage wear, with some softening and minor plating loss visible on the lug edges and the case flanks, consistent with careful historical use. The snap-on caseback is marked with the Seikomatic cursive script and reference 15015DE, showing light surface scratches and typical wear around the perimeter. The inner caseback correctly denotes the EGP 20 microns specification and houses the clear serial number. The watch is fitted with a domed acrylic crystal that remains clear and free of deep scratches, providing an unobstructed view of the dial beneath. Movement Inside beats the early automatic Seikosha 20-jewel movement, a historically significant and reliable caliber for Seiko. The rotor is cleanly engraved with "Seikosha" and "Seikomatic 20 Jewels" in gold-filled lettering. The movement architecture is clean and visually well-preserved, displaying a bright finish across the bridges, the balance wheel assembly, and the winding mechanism. Running in vintage operational condition. Maintains the authentic mechanical character of the era. The timegrapher records a performance of +40 to +46 seconds per day. Strap The timepiece is paired with a black leather strap featuring prominent yellow contrast stitching that complements the warm gold tones of the case and dial. The strap is supple, lightly textured, and secured with a standard gold-tone pin buckle, providing a comfortable and stylish fit on the wrist. Condition Assessed as being in good vintage condition. The dial is a standout feature, remaining incredibly crisp and well-preserved without any distracting flaws. The gold-plated case exhibits normal signs of wear, including light surface marks and minor plating wear on the high contact points of the lugs and the edges of the caseback. The movement is running steadily, and the overall presentation is highly attractive for a vintage dress watch of this vintage. Dimensions The case measures 36 millimeters in diameter excluding the crown. Remarks This Seikomatic is a charming representation of early 1960s Japanese design philosophy. The combination of the radiant silver sunburst dial, the sharp dauphine hands, and the warm gold-plated case offers a versatile and elegant look suitable for both formal and casual settings. It is a highly wearable piece of horological history. History Introduced in the early 1960s, the Seikomatic line was designed to bring high-quality automatic movements to the everyday wearer, moving away from the necessity of manual winding. It laid the foundation for many of Seiko's most famous automatic dress watches, emphasizing reliability, clean aesthetics, and the convenience of self-winding technology. This era marked a period of rapid innovation for the Seikosha factory, making these early models highly appreciated by vintage enthusiasts who value the roots of modern Japanese watchmaking. 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: SEI-SDJ-0005