{"product_id":"vintage-1965-japan-seiko-seikomatic-r-8305-0020-30jewels-automatic","title":"Vintage 1965 JAPAN SEIKO SEIKOMATIC-R 8305-0020 30Jewels Automatic.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1965 JAPAN SEIKO SEIKOMATIC-R 8305-0020 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 8305-0020 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 :SEIKOMATIC-R .\u003c\/li\u003e\n\u003cli\u003eCaliber number : 840.\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 : 5601683.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN 8305-0011TAD.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 37.5mm.\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. 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\u003cstrong\u003e\u003cfont color=\"#9b2166\" size=\"5\"\u003eThe movement may have been replaced.\u003c\/font\u003e\u003c\/strong\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 Benchmark of 1965 Executive Refinement (1965):\u003c\/b\u003e Manufactured in **1965**—a pivotal historical year during Japan's rapid economic expansion and horological golden age—the **Seiko Seikomatic-R** represented Suwa Seikosha's upper-tier automatic dress watch line. Sourced under reference **8305-0020**, this high-grade \"\"R\"\" (Refined) model served as the quintessential executive dress timepiece, bridging the gap between everyday automatics and top-tier King Seiko references.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Over-Engineered 30-Jewel Caliber 8305 Automatic Heart:\u003c\/b\u003e Powering this historic instrument is the revered **30-jewel Caliber 8305A**, an in-house automatic engine operating at a classic frequency of **18,000 vibrations per hour (vph)**. Equipping a dress watch in **1965** with a lavish **30-jewel specification** drastically reduced gear-train pivot wear, delivering exceptional long-term rate stability while incorporating **hacking seconds** and quick-set date operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"0020\"\" Dress Case Geometry and Low-Profile Lines:\u003c\/b\u003e The reference **8305-0020** is globally distinguished among vintage Seiko collectors for its classic, broad-shouldered stainless steel case architecture. Featuring sweeping lug shoulders, razor-sharp facets, and a signature **recessed crown at 4 o'clock**, the low-profile case maintains an ultra-sleek silhouette that glides effortlessly under a tailored shirt cuff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImmaculate Date-Only Dial Symmetry and High-Jewel Branding:\u003c\/b\u003e The dial of the **8305-0020** is a study in mid-century visual restraint and high-contrast legibility. Free from day-window clutter, it displays a radiant silver sunburst canvas set with **hand-applied, multifaceted rectangular hour indices** and sharp dauphine hands, perfectly balanced by the framed date window at 3 o'clock and the stylized **\"\"Seikomatic-R\"\"** typography 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 seal of quality 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 8305-0020 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\/s1238758069.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":52148820836673,"sku":"s1238758069","price":68200.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_e574e79b-a97b-4151-a352-c105aa1d3713.jpg?v=1788050629","url":"https:\/\/nonkun.com\/en\/products\/vintage-1965-japan-seiko-seikomatic-r-8305-0020-30jewels-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}