{"product_id":"vintage-1965-japan-seiko-seikomatic-weekdater-6206-8040-26jewels-automatic","title":"Vintage 1965 JAPAN SEIKO SEIKOMATIC WEEKDATER 6206-8040 26Jewels Automatic.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1965 JAPAN SEIKO SEIKOMATIC WEEKDATER 6206-8040 26Jewels Automatic.\u003c\/h3\u003e\u003cp\u003eWelcome to my auction!\u003cbr\u003eI am Japanese who live in Tokyo.\u003c\/p\u003e\n\u003ch4 style=\"font-size: 24px; color : #2B0000; margin-bottom: 18px;\"\u003eItem description\u003c\/h4\u003e\u003cdiv style=\"font-size: 24px; color:red; margin: 0 50px 18px 35px;\"\u003e\nIt's a SEIKO Automatic Watch, \u003cb\u003eSEIKOMATIC WEEKDATER 6206-8040 26Jewels \u003c\/b\u003e.\u003cbr\u003e\n\u003cb\u003eIt's in good used condition.\u003c\/b\u003e\u003cbr\u003e\nIt's difficult to find this valuable watch in such a good condition.\nHighly recommended for SEIKO collectors!\n\u003c\/div\u003e\n\u003cdl style=\"margin:0 0 34px 90px\"\u003e\n\u003cdt\u003e\u003cfont color=\"#970000\"\u003e\u003cb\u003eMovement : \u003c\/b\u003e\u003c\/font\u003e\u003c\/dt\u003e\n\u003cdd\u003e\u003cul\u003e\n\u003cli\u003ePet name : SEIKOMATIC WEEKDATER .\u003c\/li\u003e\n\u003cli\u003eCaliber number : 6206A,B.\u003c\/li\u003e\n\u003cli\u003eMovement : Automatic.\u003c\/li\u003e\n\u003cli\u003eBeat rate : 18000bph.\u003c\/li\u003e\n\u003cli\u003eYear of manufacture start : 1963's.\u003c\/li\u003e\n\u003cli\u003eFactory : Suwa.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/dd\u003e\n\u003cdt\u003e\u003cfont color=\"#970000\"\u003e\u003cb\u003eExternals : \u003c\/b\u003e\u003c\/font\u003e\u003c\/dt\u003e\n\u003cdd\u003e\u003cul\u003e\n\u003cli\u003eSerial number : 5904838.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN 6206-8070T AD.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 36.51mm.\u003c\/li\u003e\n\u003cli\u003eLug width : 19mm.\u003c\/li\u003e\n\u003cli\u003eBand : New Leather Strap of SEIKO original.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/dd\u003e\n\u003cdt\u003e\u003cfont color=\"#970000\"\u003e\u003cb\u003eCondition : \u003c\/b\u003e\u003c\/font\u003e\u003c\/dt\u003e\n\u003cdd\u003e\u003cul\u003e\n\u003cli\u003eUsed, it runs well.\u003c\/li\u003e\n\u003cli\u003eQuick set(Day\/Date) : Okay.\u003cbr\u003eSet the day of the week : English only.\u003cbr\u003eSet of the date : The set at one stage pulling the crown.\u003cbr\u003eSet of the days of the week : Iteration the hour hand at 9:00 and 12:00\u003c\/li\u003e\n\u003cli\u003eThe day difference time of an used watch is about +-1 minute \/ day.\u003c\/li\u003e\n\u003cli\u003eFor practical, everyday use, it would be advisable to have the movement cleaned and oiled.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/dd\u003e\n\u003cdt\u003e\u003cfont color=\"#970000\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/font\u003e\u003c\/dt\u003e\n\u003cdd\u003e\n\u003cli\u003e\n\u003cb\u003eThe Sovereign Pioneer of 1965 Full-Day Business Elegance (1965):\u003c\/b\u003e Manufactured in **1965**—a landmark year during Japan's post-war industrial expansion—the **Seiko Seikomatic Weekdater** reference **6206-8040** represented Suwa Seikosha's premier executive dress automatic. Designed to cater to modern business leaders during the Showa era, this reference perfected the \"\"Weekdater\"\" layout, setting the technical and visual blueprint for high-grade Japanese calendar wristwatches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Over-Engineered 26-Jewel Caliber 6206 Automatic Heart:\u003c\/b\u003e Powering this historic timepiece is the celebrated **26-jewel Caliber 6206B**, an in-house automatic engine operating at a steady frequency of **18,000 vibrations per hour (vph)**. Equipping an automatic watch in **1965** with a lavish **26-jewel specification** was a bold statement of micro-engineering luxury. Utilizing synthetic rubies to minimize gear-train friction, it features a quick-set date function, hand-winding capability, and Seiko's **Diashock** protection system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"8040\"\" Grammar of Design and Recessed Crown:\u003c\/b\u003e The reference **6206-8040** is globally distinguished among vintage collectors for its adherence to Taro Tanaka's early **\"\"Grammar of Design\"\"** philosophy. Executed in solid stainless steel, the case features sharp, angular facets with mirror-polished Zaratsu planes. Engineered with a **flush, recessed crown at 4 o'clock**, the case maintains an uninterrupted, highly ergonomic silhouette that sits completely flush against the wrist.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMasterful \"\"Weekdater\"\" Dial Layout and Full-Day Window:\u003c\/b\u003e The dial of the **6206-8040** is a masterclass in mid-century visual symmetry. It features a brilliant silver sunburst canvas decorated with **hand-applied, multifaceted hour indices** and sharp dauphine hands. The signature \"\"Weekdater\"\" layout showcases a framed date aperture at 3 o'clock paired with a prominent, **curved full-day window positioned above 6 o'clock**, proudly displayed in crisp typography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Sovereign Dolphin Case Back Medallion Heritage:\u003c\/b\u003e The ultimate hallmark of this 1965 vintage treasure sits stamped on the case back: the iconic **Seiko Dolphin crest** (or deeply etched waterproof dolphin medallion). Certifying its factory-regulated water resistance and high-grade construction, the 6206-8040 Seikomatic Weekdater remains an indispensable, highly collectible cornerstone reference representing the golden age of Japanese automatic horology.\u003c\/li\u003e\n\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cdl style=\"margin:0 0 34px 40px\"\u003e\n\u003cdt style=\"font-size: 24px;font-weight: bolder;\"\u003eFor more information, please look at the pictures.\u003c\/dt\u003e\n\u003cdd\u003e\u003cdiv style=\"margin: 14px 0 40px 0;\"\u003e\u003cimg src=\"https:\/\/nonkun.boy.jp\/img_ebay\/k1241874603.jpg\"\u003e\u003c\/div\u003e\u003c\/dd\u003e\n\u003cdt style=\"font-size: 24px;font-weight: bolder;\"\u003eNotes\u003c\/dt\u003e\n\u003cdd\u003e\n\u003cul style=\"margin-bottom: 18px;\"\u003e\n\u003cli\u003e\n\u003cb\u003eBefore buying.\u003c\/b\u003e\u003cdiv style=\"padding-left : 30px;\"\u003eThe 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.\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTo prevent shipping accidents.\u003c\/b\u003e\u003cdiv style=\"padding-left : 30px;\"\u003ePlease 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.\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAbout import taxes.\u003c\/b\u003e\u003cdiv style=\"padding-left : 30px;\"\u003eTaxes 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.\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAbout Payment, Shipping, Return.\u003c\/b\u003e\u003cdiv style=\"padding-left : 30px;\"\u003ePayment, Shipping, Return are in accordance with eBay's business policies.\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/dd\u003e\n\u003c\/dl\u003e\u003cbr\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":52255132975425,"sku":"k1241874603","price":94000.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_230f01c8-dc90-4743-ab6a-c63425e06b1f.jpg?v=1790209337","url":"https:\/\/nonkun.com\/products\/vintage-1965-japan-seiko-seikomatic-weekdater-6206-8040-26jewels-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}