{"product_id":"vintage-1966-japan-seiko-seikomatic-r-8305-8010-30jewels-automatic","title":"Vintage 1966 JAPAN SEIKO SEIKOMATIC-R 8305-8010 30Jewels Automatic.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1966 JAPAN SEIKO SEIKOMATIC-R 8305-8010 30Jewels 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-R 8305-8010 30Jewels \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 : 83 SEIKOMATIC-R.\u003c\/li\u003e\n\u003cli\u003eCaliber number : 8305C.\u003c\/li\u003e\n\u003cli\u003eMovement : Automatic.\u003c\/li\u003e\n\u003cli\u003eBeat rate : 18000bph.\u003c\/li\u003e\n\u003cli\u003eYear of manufacture start : 1965'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 : 6400156.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN 8305-8000S AD.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 35.1mm.\u003c\/li\u003e\n\u003cli\u003eLug width : 18mm.\u003c\/li\u003e\n\u003cli\u003eBand : New Leather Strap.\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\u003e Set 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\u003cli\u003e\u003cfont color=\"#9b2166\" size=\"5\"\u003e\u003cstrong\u003eSome film peeling is visible on the dial.\u003c\/strong\u003e\u003c\/font\u003e\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 Mid-60s Refined Executive Luxury (1966):\u003c\/b\u003e Manufactured in **1966**—a milestone historical year during Japan's high-growth economic boom and horological golden era—the **Seiko Seikomatic-R** reference **8305-8010** represented Suwa Seikosha's elevated dress watch platform. Bearing the prestigious **\"\"R\"\"** (\"\"Refined\"\") moniker, this high-grade reference served as the flagship date-only executive timepiece bridging the Seikomatic line with top-tier King Seiko models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Over-Engineered 30-Jewel Caliber 8305 Automatic Engine:\u003c\/b\u003e Powering this historic instrument is the revered **30-jewel Caliber 8305A**, an in-house automatic engine operating at a steady frequency of **18,000 vibrations per hour (vph)**. Equipping a dress watch in **1966** with an extraordinary **30-jewel specification** minimized friction across critical gear-train pivots, delivering exceptional long-term rate stability while featuring **hacking seconds** and quick-set date operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"8010\"\" Classic Dress Case and Recessed Crown Integration:\u003c\/b\u003e Sourced in a solid stainless steel case, the reference **8305-8010** is globally recognized for its sharp, broad-shouldered case architecture. Adhering to early **\"\"Grammar of Design\"\"** principles with sweeping lug chamfers and broad zero-distortion mirror-polished bevels, the low-profile case integrates a signature **recessed crown at 4 o'clock** for an uninterrupted, symmetrical wrist silhouette.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImmaculate Date-Only Dial Harmony and High-Jewel Typography:\u003c\/b\u003e The dial of the **8305-8010** is a study in mid-century visual restraint and high-contrast clarity. Free from day-window clutter, it features a radiant silver sunburst canvas set with **hand-applied, multifaceted rectangular hour indices** and sharp dauphine hands, neatly balanced by the framed date aperture at 3 o'clock and the stylized **\"\"Seikomatic-R 30 Jewels\"\"** designation above 6 o'clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Sovereign Gold Dolphin Case Back Medallion Heritage:\u003c\/b\u003e The ultimate hallmark of this 1966 treasure rests on the case back: the iconic **solid gold-embossed or deeply engraved Seiko Dolphin medallion**. Certifying its elite factory-regulated precision and water-resistant construction, the 8305-8010 30-jewel Seikomatic-R stands as an eternal, investment-grade cornerstone reference for serious vintage watch 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\/s1237447201.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":52174521991489,"sku":"s1237447201","price":59600.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_05c7e5fe-451a-4c80-9e34-a9afee584295.jpg?v=1788665381","url":"https:\/\/nonkun.com\/products\/vintage-1966-japan-seiko-seikomatic-r-8305-8010-30jewels-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}