Serviced Vintage 1965 JAPAN SEIKO SEIKOMATIC WEEKDATER 6206-8040 26J Automatic.

Serviced Vintage 1965 JAPAN SEIKO SEIKOMATIC WEEKDATER 6206-8040 26Jewels Automatic.Welcome to my auction!I am Japanese who live in Tokyo. Item description It's a SEIKO Automatic Watch, SEIKOMATIC WEEKDATER 6206-8040 26Jewels . It's in good used condition. It's difficult to find this valuable watch in such a good condition. Highly recommended for SEIKO collectors! Movement : Pet name : SEIKOMATIC WEEKDATER .Caliber number : 6206A,B.Movement : Automatic.Beat rate : 18000bph.Year of manufacture start : 1963's.Factory : Suwa.Externals : Serial number : 5920969.Dial number : JAPAN 6206-8070R AD.Glass : Acrylic.Case size : About 36.3mm.Lug width : 19mm.Band : Wrist size that can be worn is Up to about 183mm.Condition : Used, it runs well.Quick set(Day/Date) : Okay.Set the day of the week : English only.Set of the date : The set at one stage pulling the crown.Set of the days of the week : Iteration the hour hand at 9:00 and 12:00The day difference time of an used watch is about +-1 minute / day.Overhaul service in July 2026.The movement has been cleaned and oiled, so it works fine.Key Features The Pinnacle of Mid-60s Business Class Prestige (1965): In **1965**—a golden era of rapid urban modernization and surging economic confidence following the Tokyo Olympics—the **Seiko Seikomatic Weekdater** served as the ultimate executive dress watch. Sourced from the legendary **Suwa Seikosha** factory under reference **6206-8040**, this historic model was engineered specifically for the nation's rising class of young, ambitious business managers. Representing a high-end daily instrument of immense reliability, it captured the forward-thinking corporate pride of the mid-Showa miracle. The Premium 26-Jewel Caliber 6206 Automatic Engine: This masterpiece is powered by the highly respected **26-jewel Caliber 6206**, a robust, high-performance automatic movement operating at a classic frequency of **18,000 vibrations per hour (vph)**. Positioned as a direct relative to the movement that would later power the first automatic Grand Seiko (62GS), this **26-jewel specification** used a generous number of synthetic rubies to reduce pivot friction and maximize auto-winding efficiency, securing exceptional long-term stability. Architectural ""8040"" Beefy Lug Case and Recessed Crown: The reference **6206-8040** is globally celebrated among vintage purists for its substantial, muscular case architecture featuring **thick, prominent multifaceted lugs** that command a powerful wrist presence. Adhering to early automatic pride and functional aesthetic rules, it houses a **completely recessed time-setting crown at 4 o'clock**, signaling that manual winding was fully obsolete due to the high efficiency of the automatic rotor system. Immaculate ""Weekdater"" Dial Layout and Dual-Calendar Harmony: The dial of the **6206-8040** is a study in clinical mid-century visual balance, showcasing a radiant silver sunburst canvas. It features a highly advanced **separated dual-calendar layout**: a framed date window at 3 o'clock and a wide, completely independent **horizontal day-of-the-week aperture located symmetrically above 6 o'clock**. Decorated with hand-applied, multifaceted chunky block indices, this balanced layout prioritized instant split-second legibility. The Sovereign Legacy of the Engraved Dolphin Case Back: Manufactured in the milestone mechanical year of **1965**, the 6206-8040 26-jewel variant remains a highly coveted cornerstone reference for serious vintage Seiko collectors worldwide. The ultimate hallmark of its premium internal pedigree sits on the screw-down case back: a **crisply detailed, etched Dolphin insignia**, which historically certified its rugged daily durability and water resistance. It stands as a profound testament to an era when Suwa perfected the luxury automatic daily instrument to an eternal standard. For more information, please look at the pictures. Notes Before buying.The vintage watches we sell are inspected and adjusted so they work fine. However, since it is an vintage watch, Please purchase on the assumption that it will be repaired. To prevent shipping accidents.Please monitor the tracking number until the item arrives and if it stagnates, please investigate at your country post office. Also, please confirm the item when you receive the item. About import taxes.Taxes such as import duties and VAT are not included in the item price or shipping charges, except for items shipped to the US. When you purchase, you will likely be required to pay these fees in your country. About Payment, Shipping, Return.Payment, Shipping, Return are in accordance with eBay's business policies.

It's a SEIKO Automatic Watch, SEIKOMATIC WEEKDATER 6206-8040 26Jewels .
It's in good uséd condition.
It's difficult to find this valuable watch in such a good condition. Highly recommended for SEIKO collectors!