{"product_id":"vintage-1971-japan-king-seiko-chronometer-sp-weekdater-5246-6010-25j-automatic","title":"Vintage 1971 JAPAN KING SEIKO CHRONOMETER SP WEEKDATER 5246-6010 25J Automatic.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1971 JAPAN KING SEIKO CHRONOMETER SPECIAL WEEKDATER 5246-6010 25Jewels 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 Automatic Watch, \u003cb\u003eKING SEIKO CHRONOMETER SPECIAL WEEKDATER 5246-6010 25Jewels \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 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 : 52 KING SEIKO CHRONOMETER SPECIAL WEEKDATER .\u003c\/li\u003e\n\u003cli\u003eCaliber number : 5246A.\u003c\/li\u003e\n\u003cli\u003eMovement : Automatic.\u003c\/li\u003e\n\u003cli\u003eBeat rate : 28800bph.\u003c\/li\u003e\n\u003cli\u003eYear of manufacture start : 1971's.\u003c\/li\u003e\n\u003cli\u003eFactory : Kameido.\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 : 190197.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN 5246-6010T.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 35.5mm.\u003c\/li\u003e\n\u003cli\u003eLug width : 18mm.\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 can be in English or Kanji. \u003cbr\u003eSet of the date : The set at one stage pulling the crown.\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 Peak of 1971 Daini Mechanical Luxury (1971):\u003c\/b\u003e Manufactured in **1971**—a monumental year during Japan's peak post-war horological supremacy—the **King Seiko Chronometer Special Weekdater** represented Daini Seikosha's pinnacle achievement in automatic watchmaking. Sourced under reference **5246-6010**, this elite \"\"Special\"\" designated timepiece was factory-adjusted to strict internal chronometer specifications, serving as an exclusive status symbol for high-ranking executive professionals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Legendary High-Beat 28,800 VPH Caliber 5246 Heart:\u003c\/b\u003e Powering this historic watch is the revered **25-jewel Caliber 5246A**, an in-house automatic movement operating at a high-beat frequency of **28,800 vibrations per hour (8 beats per second)**. Highly celebrated by vintage purists, this legendary 52-series movement featured instantaneous dual-calendar jumping at midnight, micro-regulator fine tuning, **hacking seconds**, and full hand-winding capability—a movement family so robust it later served as the architectural base for modern 4S automatic calibers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"6010\"\" Grammar of Design Case Geometry:\u003c\/b\u003e The reference **5246-6010** is globally distinguished among collectors for its textbook execution of Taro Tanaka's **\"\"Grammar of Design\"\"** philosophy. The solid stainless steel case features sharp, angular facets and sweeping broad-shouldered lugs with mirror-polished Zaratsu finishing. Uniquely, the case incorporates a **front-loading (monocoque-style) construction** with an external fine-adjustment screw located between the lower lugs, allowing watchmakers to regulate timing without removing the movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImmaculate \"\"Chronometer Special\"\" Dial Harmony and Fine Typography:\u003c\/b\u003e The dial of the **5246-6010** is a masterclass in clinical mid-century visual balance. Set against a radiant silver sunburst canvas, it features **hand-applied, multifaceted hour indices** with razor-sharp hands. The dial proudly displays **\"\"CHRONOMETER OFFICIALLY CERTIFIED\"\"** under the Seiko signature, with the applied **KS logo**, stylized **\"\"Special\"\" cursive script**, **\"\"HI-BEAT\"\"** designation, and the Daini lightning bolt emblem balanced above 6 o'clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Sovereign Daini Medallion and Legacy Heritage:\u003c\/b\u003e The ultimate hallmark of this 1971 treasure sits on the case back: an iconic **gold-embossed King Seiko medallion** or deeply stamped Daini emblem, certifying its elite manufacturing status within Daini Seikosha. Standing as one of the finest automatic dress references ever produced by Seiko, the 5246-6010 Chronometer Special remains an indispensable, top-tier investment-grade cornerstone piece for serious vintage horology collectors worldwide.\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\/p1242276779.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":67577441321281,"sku":"p1242276779","price":173200.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_25c2da11-bdd9-4d1b-9b35-1d206760d6b1.jpg?v=1790391195","url":"https:\/\/nonkun.com\/products\/vintage-1971-japan-king-seiko-chronometer-sp-weekdater-5246-6010-25j-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}