{"product_id":"serviced-vintage-1967-japan-seiko-business-a-830646-8020-27j-automatic","title":"Serviced  Vintage 1967 JAPAN SEIKO BUSINESS-A  8306(46)-8020 27J Automatic.","description":"\u003ch3 style=\"font-size: 32px; color: #2B0000; margin-bottom: 36px;\"\u003eVintage 1967 JAPAN SEIKO BUSINESS-A WEEKDATER 8306(46)-8020 27Jewels Automatic.\u003c\/h3\u003e\n\u003cp\u003eWelcome to my auction!\u003c\/p\u003e\n\n\u003ch4 style=\"font-size: 24px; color: #2B0000; margin-bottom: 18px;\"\u003eItem description\u003c\/h4\u003e\n\u003cdiv style=\"font-size: 24px; color: red; margin: 0 50px 18px 35px;\"\u003e\n  It's a SEIKO Automatic Watch, \u003cb\u003eBUSINESS-A WEEKDATER 8306(46)-8020 27Jewels \u003c\/b\u003e.\u003cbr\u003e\n  \u003cb\u003eIt's in good used condition.\u003c\/b\u003e\u003cbr\u003e\n  It's difficult to find this valuable watch in such a good condition.\n  Highly recommended for SEIKO collectors!\n\u003c\/div\u003e\n\n\u003cdl style=\"margin: 0 0 34px 90px;\"\u003e\n  \u003cdt\u003e\u003cspan style=\"color: #970000;\"\u003e\u003cb\u003eMovement : \u003c\/b\u003e\u003c\/span\u003e\u003c\/dt\u003e\n  \u003cdd\u003e\n    \u003cul\u003e\n      \u003cli\u003ePet name : BUSINESS-A .\u003c\/li\u003e\n      \u003cli\u003eCaliber No. : 8346A.\u003c\/li\u003e\n      \u003cli\u003eMovement : Automatic.\u003c\/li\u003e\n      \u003cli\u003eBeat rate : 18000bph.\u003c\/li\u003e\n      \u003cli\u003eYear of manufacture start : 1966's.\u003c\/li\u003e\n      \u003cli\u003eFactory : Suwa.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/dd\u003e\n\n  \u003cdt\u003e\u003cspan style=\"color: #970000;\"\u003e\u003cb\u003eExternals : \u003c\/b\u003e\u003c\/span\u003e\u003c\/dt\u003e\n  \u003cdd\u003e\n    \u003cul\u003e\n      \u003cli\u003eSerial No. : 7400263.\u003c\/li\u003e\n      \u003cli\u003eDial No. : JAPAN 8306-8030T AD.\u003c\/li\u003e\n      \u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n      \u003cli\u003eCase size : About 35.25mm.\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\n  \u003c\/dd\u003e\n\n  \u003cdt\u003e\u003cspan style=\"color: #970000;\"\u003e\u003cb\u003eCondition : \u003c\/b\u003e\u003c\/span\u003e\u003c\/dt\u003e\n  \u003cdd\u003e\n    \u003cul\u003e\n      \u003cli\u003eUsed, it runs well.\u003c\/li\u003e\n      \u003cli\u003eONE PIECE CASE\u003cbr\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 week : Iteration the hour hand at 10:00 and 1:00\u003c\/li\u003e\n      \u003cli\u003eThe day difference time of an used watch is about +-1 minute \/ day.\u003c\/li\u003e\n      \u003cli\u003e\u003cb style=\"color: red;\"\u003eOverhaul service in September 2026.\u003cbr\u003eThe movement has been cleaned and oiled, so it works fine.\u003c\/b\u003e\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/dd\u003e\n\n  \u003cdt\u003e\u003cspan style=\"color: #970000;\"\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003c\/span\u003e\u003c\/dt\u003e\n  \u003cdd\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cb\u003eThe Sovereign Peak of Mid-60s Business Class Luxury (1967):\u003c\/b\u003e Manufactured in \u003cb\u003e1967\u003c\/b\u003e—a landmark year during Japan's high-growth economic miracle—the \u003cb\u003eSeiko Business-A (Business Automatic)\u003c\/b\u003e represented Suwa Seikosha's dedicated line engineered specifically for rising corporate executives. Sourced under reference \u003cb\u003e8306-8020\u003c\/b\u003e (also cataloged with movement designation \u003cb\u003e46\u003c\/b\u003e), this high-grade mid-1960s model offered a sophisticated bridge between the Seikomatic-R series and the upper-tier Lord Matic lineup.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eThe Over-Engineered 27-Jewel Caliber 8306 Automatic Heart:\u003c\/b\u003e Powering this historic timepiece is the revered \u003cb\u003e27-jewel Caliber 8306A\u003c\/b\u003e, an in-house automatic engine operating at a steady frequency of \u003cb\u003e18,000 vibrations per hour (vph)\u003c\/b\u003e. Equipping an executive watch in \u003cb\u003e1967\u003c\/b\u003e with an ultra-high \u003cb\u003e27-jewel specification\u003c\/b\u003e minimized friction across critical gear-train pivots. This movement features modern executive conveniences including \u003cb\u003ehacking seconds\u003c\/b\u003e, quick-set date operation, and smooth manual-winding capability.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eArchitectural \"8020\" Case Geometry and Low-Profile Lines:\u003c\/b\u003e The reference \u003cb\u003e8306-8020\u003c\/b\u003e is globally distinguished among vintage collectors for its classic, broad-shouldered stainless steel case architecture. Designed with sharp, faceted lugs and sweeping, zero-distortion mirror-polished bevels adhering to early \u003cb\u003e\"Grammar of Design\"\u003c\/b\u003e principles, the low-profile case allows the watch to slide effortlessly under a tailored shirt cuff.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eMasterful \"Weekdater\" Dial Harmony and Executive Clarity:\u003c\/b\u003e The dial of the \u003cb\u003e8306-8020\u003c\/b\u003e showcases outstanding visual balance, featuring a radiant silver sunburst canvas decorated with \u003cb\u003ehand-applied, multifaceted rectangular hour indices\u003c\/b\u003e. Symmetrically framed at 3 o'clock, the dual-calendar window houses a full day-of-the-week display alongside the date wheel, proudly signed with the stylized applied \u003cb\u003e\"Business-A\"\u003c\/b\u003e logo and \u003cb\u003e\"27 JEWELS\"\u003c\/b\u003e typography above 6 o'clock.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eAn Investment-Grade Masterpiece of Suwa's Executive Legacy:\u003c\/b\u003e Manufactured in the milestone mechanical year of \u003cb\u003e1967\u003c\/b\u003e, the 8306-8020 27-jewel Business-A remains a highly coveted, universally respected cornerstone reference for vintage Seiko collectors. It captures the exact historical era where Seiko created specialized executive lines for Japan's emerging corporate leaders, built to an uncompromising, heirloom-grade standard.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/dd\u003e\n\u003c\/dl\u003e\n\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\n    \u003cdiv style=\"margin: 14px 0 40px 0;\"\u003e\n      \u003cimg src=\"https:\/\/nonkun.boy.jp\/img_ebay\/q1241205418.jpg\" alt=\"Seiko Business-A Watch\"\u003e\n    \u003c\/div\u003e\n  \u003c\/dd\u003e\n  \u003cdt style=\"font-size: 24px; font-weight: bolder;\"\u003eNotes\u003c\/dt\u003e\n  \u003cdd style=\"margin-left: 16px;\"\u003e\n    \u003cul style=\"margin-bottom: 18px;\"\u003e\n      \u003cli\u003e\n        \u003cb\u003eBefore buying.\u003c\/b\u003e\n        \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\n        \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\n        \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\n        \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","brand":"Seiko","offers":[{"title":"Default Title","offer_id":68079012446529,"sku":"q1241205418","price":63600.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_c61b606f-0ee2-47ed-ace5-eb62eb98f481.jpg?v=1793158592","url":"https:\/\/nonkun.com\/products\/serviced-vintage-1967-japan-seiko-business-a-830646-8020-27j-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}