Now available at auction from Second Vintage This classic 1960s Seiko Weekdater features the distinctive day display at 6 o'clock. The watch retains a well-preserved dolphin medallion on the caseback and is powered by a clean gold-tone 6206A automatic movement, complemented by a recessed crown that provides a sleek and uninterrupted case profile. Brand: Seiko Model: Seikomatic Weekdater Reference Number: 6206-8990 Serial Number: 5606849 Movement: Automatic, caliber 6206A, 26 jewels Dial: Silver sunburst finish with day at 6 o'clock and date at 3 o'clock Case Size: 37 mm (excluding the crown) Case Material: Stainless steel Production Year: 1965 Condition: Good vintage condition. Movement serviced on 14 September 2026. Timegrapher: +12+15s/day Movement Serviced on 14/9/2026, performing remarkably well. Dial and Hands The dial features a silver sunburst finish adorned with applied faceted indices. It displays the signature Weekdater layout, placing the day window at 6 o'clock and the date window at 3 o'clock. The dial exhibits an attractive vintage patina, with minor spotting and edge wear visible under magnification. The dauphine style hands show minor surface oxidation and light scratches under magnification, remaining entirely consistent with the age of the dial. Case and Crystal The stainless steel construction features a smooth steel bezel and presents honest vintage wear. There are moderate scratches and handling marks across the case consistent with age, while the bezel shows light scratches and scuffs. The recessed crown is positioned at 4 o'clock and is partially obscured by the case design. The caseback displays a well-preserved dolphin medallion. The domed acrylic crystal is clear, showing minor surface scratches. Movement The automatic caliber 6206A features a clean gold-tone finish and 26 jewels. The rotor and bridges show minimal visual wear with no obvious signs of corrosion or damage, bearing the engraved SEIKO markings. The recorded timegrapher result is +12+15s/day Movement Serviced on 14/9/2026. Exhibiting remarkable accuracy and consistency, performing brilliantly for a vintage timepiece. The movement was serviced on 14 September 2026. Strap The watch is fitted with a black leather strap featuring white contrast stitching, providing a casual character. The strap is secured with an unsigned clasp. Condition Good vintage condition. The movement was serviced on 14 September 2026 and, supported by the recorded timegrapher result, is performing very strongly. The stainless steel case and smooth bezel display moderate scratches, scuffs, and handling marks consistent with age. The silver sunburst dial and dauphine hands present beautifully while showing minor spotting, edge wear, and light oxidation visible under magnification. The domed acrylic crystal has minor surface scratches. Dimensions 37 mm (excluding the crown) Remarks This Seiko Weekdater features a recognizable 6 o'clock day display and a well-preserved dolphin caseback medallion. The clean 6206A automatic movement and sleek recessed crown complete this classic vintage package. History The Seikomatic line was introduced in the early 1960s as Seiko's upper-tier automatic range, positioned just below Grand Seiko. This specific model utilizes the caliber 6206, a true automatic movement that does not feature hand-winding capability. To emphasize that the automatic movement requires no daily winding, Seiko designed the watch with a recessed crown positioned at 4 o'clock, allowing it to sit flush with the case profile. 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-MWJ-0003