{"product_id":"vintage-1970-japan-king-seiko-chronometer-calendar-4502-8010-25j-hand-winding","title":"Vintage 1970 JAPAN KING SEIKO CHRONOMETER CALENDAR 4502-8010 25J Hand-winding.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1970 JAPAN KING SEIKO SUPERIOR CHRONOMETER CALENDAR 4502-8010 25Jewels Hand-winding.\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 Hand-winding Watch, \u003cb\u003eKING SEIKO SUPERIOR CHRONOMETER CALENDAR 4502-8010 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 : 45 KING SEIKO CHRONOMETER CALENDAR .\u003c\/li\u003e\n\u003cli\u003eCaliber number : 4502A.\u003c\/li\u003e\n\u003cli\u003eMovement : Hand-winding.\u003c\/li\u003e\n\u003cli\u003eBeat rate : 36000bph.\u003c\/li\u003e\n\u003cli\u003eYear of manufacture start : 1969'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 : 091619.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN 4502-8020T.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 37mm.\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 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 Daini Precision Mastery (1970):\u003c\/b\u003e Manufactured in **1970**—a milestone historical year defined by the Osaka Expo '70 and Japan's peak post-war industrial supremacy—the **King Superior Chronometer (45KS)** represented Daini Seikosha's ultimate achievement in manual-wind chronometry. Sourced under reference **4502-8010**, this ultra-rare \"\"Superior Chronometer\"\" variant was factory-adjusted to internal precision standards that rivaled and surpassed official Swiss COSC regulations, serving as an elite status symbol for high-society executives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Legendary 36,000 VPH High-Beat Caliber 4502 Heart:\u003c\/b\u003e This masterpiece is powered by the iconic **25-jewel Caliber 4502A**, an in-house manual-wind movement operating at a blistering frequency of **36,000 vibrations per hour (10 beats per second)**. Globally celebrated by purists as one of the finest hand-wound engines ever constructed, this **25-jewel specification** utilized elite micro-engineering to control gear friction, delivering extraordinary daily chronometric stability, **hacking seconds**, and an instant-change calendar mechanism.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"8010\"\" Cushion-Style Case Geometry:\u003c\/b\u003e The reference **4502-8010** is globally distinguished among serious collectors for its distinctive, bold cushion-style case architecture. Departing from traditional sharp angular lugs, the solid stainless steel case features sweeping, broad-shouldered contours with mirror-polished bevels engineered according to Taro Tanaka's **\"\"Grammar of Design\"\"** guidelines. This low center-of-gravity design allows the mechanical instrument to sit completely flush against the wrist, sliding weightlessly under a tailored cuff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImmaculate \"\"Superior Chronometer\"\" Dial Harmony:\u003c\/b\u003e The dial of the **4502-8010** is a masterclass in clinical mid-century luxury, showcasing a radiant silver sunburst canvas proudly bearing the rare **\"\"SUPERIOR CHRONOMETER\"\"** official designation. It features **hand-applied, multifaceted rectangular block indices** with elegant black insert details and razor-sharp hands that catch light with high contrast. Symmetrically framed at 3 o'clock, the quick-set date window provides crisp date tracking, completed by the applied **KS logo** and Daini lightning bolt emblem above 6 o'clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Sovereign Gold KS Medallion of Kameido's Heritage:\u003c\/b\u003e The ultimate hallmark of this 1970 treasure sits proudly on the case back: a **pristine, solid gold-embossed King (KS) medallion**. This iconic emblem historically certified its elite manufacturing status and supreme, factory-regulated chronometer timing accuracy. Built to an uncompromising heirloom standard, the 4502-8010 Superior Chronometer stands as an eternal, investment-grade cornerstone reference for vintage 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\/1233643922.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":52078110736705,"sku":"1233643922","price":198100.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_4159587a-d609-4ae3-8e27-568d66bda376.jpg?v=1786515322","url":"https:\/\/nonkun.com\/products\/vintage-1970-japan-king-seiko-chronometer-calendar-4502-8010-25j-hand-winding","provider":"NONKUN Japan","version":"1.0","type":"link"}