Seiko Seikomatic 6206-8100 (1966)

Now available at auction from Second Vintage This Seikomatic features a sought-after 6 o'clock day window configuration, highly appreciated for the balanced dial symmetry it provides. Anchored by a beautifully preserved silver sunburst dial and framed by a classic fluted bezel, this piece offers a highly attractive combination of mid-century Japanese design and robust automatic watchmaking. Brand: Seiko Model: Seikomatic Reference Number: 6206-8100 Serial Number: 6701247 Movement: Automatic, Caliber 6206B, 26 jewels Dial: Silver sunburst with Kanji day at 6 o'clock and date at 3 o'clock Case Size: 37mm (excluding the crown) Case Material: Stainless steel Production Year: 1966 Condition: Good vintage condition. Timegrapher: +20+25s/day, running strong and steady. Dial and Hands Exceptionally clean and attractive, the silver sunburst dial is very well-preserved. The applied indices and the Seiko logo remain bright and intact, while the dial printing is crisp with no visible loss. A distinctive Kanji day window sits at the 6 o'clock position, complemented by a standard date aperture at 3 o'clock. The silver-tone dauphine hands are sharp and clean, displaying no significant oxidation or corrosion. Case and Crystal The stainless steel case displays honest vintage wear, with typical surface scratches and minor dings consistent with age. The lugs retain their general shape but show signs of wear and possible light previous polishing. A distinct fluted steel bezel frames the dial, showing moderate wear and a softening of the fluted edges consistent with use. A small crown is recessed into the case at the 4 o'clock position. On the reverse, the charming dolphin motif caseback engravings remain clearly visible. The domed acrylic crystal exhibits some light surface scratches and edge wear visible under angled lighting. Movement Inside beats the automatic Caliber 6206B, a 26-jewel movement operating at 18,000 vibrations per hour, featuring Diashock shock resistance and Diafix lubrication. The gold-tone movement plates and rotor appear very clean, with crisp engravings and no visible corrosion, oxidation, or significant scratches. The timegrapher records +20+25s/day. Performing well within expected vintage tolerances; running strong and steady. Strap The watch is fitted with a classic black leather strap featuring an alligator grain pattern and white contrast stitching. It appears to be in lightly used condition, serving as an elegant dress strap. Condition Good vintage condition. The dial and hands are exceptionally well-preserved and clean. The case and fluted bezel show honest wear, surface scratches, minor dings, and softened edges consistent with age and use, with possible light previous polishing to the lugs. The domed acrylic crystal presents light surface marks, while the movement remains remarkably clean and visually well-maintained. Dimensions The case measures 37mm (excluding the crown). Remarks This Seikomatic offers a sought-after 6 o'clock day window configuration and a beautifully preserved silver sunburst dial. The combination of the classic fluted bezel and the charming dolphin caseback makes it a highly appealing addition to any vintage Seiko collection. History The Seikomatic line was introduced in the early 1960s as Seiko's foray into high-end automatic watches and served as a direct predecessor to the 62GS. The reference 6206-8100 features a distinctive fluted bezel and a recessed crown at the 4 o'clock position, designed to emphasize its automatic winding nature. The Seiko 6206 movement debuted in 1963 as an improved version of the Caliber 400. 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-MJX-0017