Offered in this auction by Second Vintage This Seikomatic Weekdater 6206-8990 represents the pinnacle of Seiko’s 1960s automatic innovations. Beautifully preserved, this example showcases the understated elegance and robust engineering that made these watches icons among vintage enthusiasts. With its crisp sunburst dial, sharp stainless steel case, and flawlessly integrated Weekdater complication, this piece is a true collector’s find—rarely seen in such exceptional near-mint condition. Brand: Seiko Model: Seikomatic Weekdater Reference Number: 6206-8990 Serial Number: 5800946 Movement: Automatic Seiko in-house movement Dial: Silver sunburst with applied baton markers and framed day-date window Case Size: 37 mm (excluding the crown) Case Material: Stainless steel Production Year: 1965 Condition: Outstanding near-mint condition; running within vintage tolerances Dial and Hands The dial gleams with an original silver sunburst finish, untouched by time and free from spotting or blemishes. Applied indices and Seiko logos remain brilliantly defined, while the crisp day-date display at 3 o’clock adds both function and balance. The hands remain factory-straight and exceptionally well preserved, featuring gently aged lume that speaks to careful preservation over nearly six decades. Case and Crystal The stainless steel case retains its original lines and sharp edges, exhibiting only the faintest signs of handling. Lugs are well sculpted and polished surfaces are mirror-bright. The acrylic crystal is remarkably clear, maintaining excellent visibility of the dial with just minor natural hairlines that do not detract from overall clarity. Movement Driven by Seiko’s automatic in-house caliber, the movement delivers reliable vintage performance. The Weekdater mechanism operates smoothly, and all functions are working correctly. The watch is currently running within vintage tolerances. Strap Completed by a classic black textured leather strap, the watch is ready to wear and pairs beautifully with the elegance of the case and dial. The strap remains supple and clean, with only minimal signs of gentle use. Condition This Seikomatic Weekdater is in outstanding near-mint condition. Its dial, case, and hands are all exceptionally well preserved, with sharp details and minimal evidence of wear—an uncompromising example for the serious collector. Dimensions Case diameter: 37 mm (excluding crown) Remarks The Seikomatic Weekdater 6206-8990 is recognized for its period-correct design and the technical prowess of its day-date complication. Finding such a well-preserved original example has become increasingly rare, making this watch a standout addition to any vintage collection. History Introduced in the mid-1960s, Seikomatic Weekdater models set a new standard for precision and practicality in Japanese watchmaking. With its innovative calendar display and timeless styling, this reference remains a testament to Seiko’s masterful craftsmanship and enduring legacy in horological history. Payment and Shipping Payment must be completed within 1-3 days after purchase. The watch will be securely packaged and shipped with tracking and insurance for your peace of mind. Please review the pictures carefully before bidding. We strive to showcase the watch from multiple angles for an accurate representation. As with all vintage watches, water resistance is not guaranteed. The watch will be delivered in fully functional working condition. If you have any questions, feel free to contact us after the auction ends. / Second Vintage SKU: SEI108U0LA000