Seiko - Seikomatic Slimdate - No reserve price - 841990 - Men - 1964

Now available at auction from Second Vintage A remarkably clean example of a classic 1960s Seikomatic, this 1964 Slimdate pairs beautifully preserved dress watch proportions with a vibrant silver sunburst dial and a sophisticated 30-jewel automatic caliber. Brand: Seiko Model: Seikomatic Slimdate Reference Number: 841990 Serial Number: 4402798 Movement: Automatic, Caliber 840, 30 Jewels Dial: Silver sunburst with applied gold-tone indices Case Size: 37 mm (excluding the crown) Case Material: Gold-plated Production Year: 1964 Condition: Excellent vintage condition. Timegrapher: -30s-33s/day, running strong and steady. Dial and Hands The exceptionally clean and vibrant silver sunburst dial is highly reflective, featuring crisp, fully legible printed text and an intact date window frame. The applied gold-tone indices and Seiko logo remain firmly intact and bright. Very minor, isolated spotting is visible on the dial surface only under high magnification. The dauphine gold-tone hands show expected age-related oxidation and minor spotting on their flat surfaces, while the sweep second hand remains clean. Case and Crystal The 37mm gold-plated case presents honest vintage wear with well-preserved plating. The gold-tone finish exhibits light surface scratches consistent with age, while the edges remain relatively well-defined and free of major dents or deep gouges. A thin, integrated gold-tone bezel shows light hairline scratches matching the case. A recessed crown is positioned cleanly at 4 o'clock. The smooth caseback displays clear serial number and reference engravings, with an interior ASGP marking indicating the gold plating. The domed acrylic crystal is clear, providing a distortion-free view of the dial without any major scratches, cracks, or crazing. Movement The watch is powered by the automatic 30-jewel Seikosha caliber 840. The movement appears very clean, showing no visible corrosion or heavy staining, and the screws and plates display a good finish. The rotor is present and correctly signed. Engravings for Seikomatic, 30 Jewels, Seikosha, and 840 are clearly legible. Timegrapher: -30s-33s/day. Performing well within expected vintage tolerances; running strong and steady. Strap The watch is fitted with a new black leather strap featuring contrasting white stitching, which appears unworn or very lightly used. It is secured by an unsigned gold-tone buckle. The strap accommodates a maximum wrist size of up to 18cm. Condition Excellent vintage condition. The watch presents beautifully, highlighted by its vibrant sunburst dial and a well-preserved case showing honest wear and intact plating. The hands display natural age-related oxidation, and the dial shows only isolated, microscopic spotting. The movement is clean and, supported by the timegrapher results, is running strong and steady. Dimensions 37 mm (excluding the crown) Remarks This 1964 Seikomatic Slimdate offers a beautifully preserved silver sunburst dial and classic 1960s dress watch proportions. Powered by the 30-jewel Seikosha 840 automatic movement and featuring clear caseback engravings, it is a highly attractive and well-documented example of mid-century Japanese watchmaking. History The Seikomatic line served as Seiko's flagship automatic range in the 1960s. The Slimdate variant was engineered to provide a high-precision automatic movement without a bulky case profile. Powered by the 30-jewel Caliber 840, a movement that was later re-designated by Seiko as the 8305, this model highlights Seiko's technical advancement during the era. The case features a recessed crown located at the 4 o'clock position, a deliberate design choice intended to emphasize that the watch is self-winding and does not require daily manual winding. Payment and Shipping Payment must be completed within 1–3 days after purchase. Your watch will be professionally and securely packaged, then shipped with tracking and insurance for your peace of mind. We use fast express shipping, with typical delivery within 1–4 business days, depending on the destination. Please note that vintage watches may show minor signs of wear, aging, or imperfections, which are considered normal for watches of this age. We kindly ask you to review all photos carefully before bidding. We photograph each watch from multiple angles to provide the most accurate representation possible, and the photos form an important part of the description. The timegrapher assessment if provided is seen as an indication of the movement’s condition under fully wound testing conditions. As with all vintage watches, results may vary in daily use. If you have any concerns regarding functionality or defects after delivery, please contact us within 3 days of receiving the watch so we can assist you. As with all used watches, water resistance is not guaranteed. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: SEI-MSJ-0002