Available now on auction by Second Vintage The Seiko Seikomatic Weekdater stands as a brilliant testament to mid-century Japanese horological ambition, seamlessly blending elegant dress watch proportions with highly practical daily complications. Introduced during an era of rapid mechanical advancement for Seiko, the Weekdater series became the watch of choice for the discerning professional. Its signature layout, featuring a prominently framed day display at the six o'clock position and a date window at three o'clock, offered a beautifully balanced and symmetrical aesthetic that remains highly coveted by collectors today. This specific example beautifully captures the essence of 1960s Seiko design language, offering a sophisticated presence on the wrist powered by a robust and highly finished automatic caliber. Brand: Seiko Model: Seikomatic Weekdater Reference Number: 6206-8990 Serial Number: 5402758 Movement: Automatic caliber 6206A, 26 jewels Dial: Silver sunburst dial with applied faceted indices, exceptionally clean and well preserved condition Case Size: 37 mm (excluding the crown) Case Material: Stainless steel Production Year: 1965 Condition: Excellent vintage condition with honest case wear and a remarkably crisp dial Dial and Hands The dial of this Seikomatic Weekdater is a masterclass in mid-century restraint and finishing, presenting a stunning silver sunburst texture that catches the light beautifully from every angle. It features applied, highly polished faceted baton indices adorned with central black inserts, perfectly complementing the sharp, polished dauphine hands which also carry matching black central stripes. The typography is exceptionally crisp, with the applied Seiko logo and printed Seikomatic Weekdater script remaining sharp and legible. The signature day window at six o'clock and the date aperture at three o'clock are both elegantly framed in polished steel. Careful inspection reveals the dial is in outstanding condition, remaining exceptionally clean and devoid of any significant moisture damage, spotting, or discoloration, presenting an incredibly fresh appearance that is rare for a timepiece of this vintage. Case and Crystal The 37 millimeter stainless steel case features classic proportions with softly sweeping lugs and a smooth polished bezel. A defining characteristic of the Seikomatic line is the recessed crown positioned at four o'clock, designed to emphasize the automatic winding nature of the movement by hiding the winding crown from the primary silhouette. The case exhibits honest signs of vintage wear, with fine surface scratches and light handling marks consistent with decades of careful use, yet it retains strong overall geometry without evidence of aggressive over-polishing. The snap-on caseback displays the iconic Seiko dolphin motif, which has softened naturally over time, alongside clearly legible reference and serial number engravings. A domed acrylic crystal protects the dial, remaining clear and free of any distracting deep scratches or visual distortions. Movement Powering this timepiece is the beautifully finished Seiko caliber 6206A automatic movement, featuring 26 jewels and the brand's proprietary Diashock anti-shock system. The movement presents a striking gilt finish across the bridges and the winding rotor, which is proudly engraved with the Seiko signature and jewel count. Close inspection shows the movement components are clean and well preserved. Performing well within expected vintage tolerances, running strong and steady. The timegrapher records a performance of -32 to -36 seconds per day. Strap The watch is fitted with a handsome black leather strap featuring contrasting white side stitching. The strap offers a supple and comfortable fit, securing to the wrist with a classic polished stainless steel pin buckle, perfectly complementing the vintage aesthetic of the silver dial and steel case. Condition This Seikomatic Weekdater is in excellent vintage condition. The dial is the clear standout, remaining exceptionally well preserved and free of the typical aging or staining often seen in pieces from this era. The stainless steel case shows normal, honest wear with light surface marks that do not detract from its highly attractive overall presentation. The movement is clean and operational, making this a wonderful vintage survivor. Dimensions 37 mm case size excluding the crown. Remarks Finding a Seikomatic Weekdater with such a pristine dial is a genuine delight for any enthusiast of vintage Japanese horology. The symmetrical day and date layout, combined with the sharp dauphine hands and crisp sunburst finish, creates a timeless aesthetic that punches far above its weight class in terms of charm and historical value. History The Seikomatic line was launched in the early 1960s as a premium tier of automatic watches, positioned just below the Grand Seiko and King Seiko families. The Weekdater models, introduced shortly after, were specifically designed for the modern businessman, prioritizing the display of the day of the week in a highly legible format. The innovative placement of the day window at six o'clock became a defining characteristic of the era, showcasing Seiko's willingness to experiment with dial symmetry and functional design. These watches laid the groundwork for Seiko's dominance in the automatic day-date market, cementing a legacy of reliability and elegant utility that endures to this day. 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-SMW-0003