{"product_id":"vintage-1966-japan-seiko-83-seikomatic-r-8346-8000-27jewels-automatic","title":"Vintage 1966 JAPAN SEIKO 83 SEIKOMATIC-R  8346-8000 27Jewels Automatic.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1966 JAPAN SEIKO 83 SEIKOMATIC-R  8346-8000 27Jewels 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\u003e83 SEIKOMATIC-R  8346-8000 27Jewels \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 : 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\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 : 6915370.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN 8346-8010T AD.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 36mm.\u003c\/li\u003e\n\u003cli\u003eLug width : 18mm.\u003c\/li\u003e\n\u003cli\u003eBand : Wrist size that can be worn is Up to about 185mm.\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 : English only.\u003cbr\u003eSet of the days of the week : Iteration the hour hand at 9:00 and 1:00.\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 Dawn of the Business-A Executive Series (1966):\u003c\/b\u003e Manufactured in **1966**—a defining milestone year during Suwa Seikosha's mid-century expansion—the **Seiko Business-A (Business Automatic)** reference **8346-8000** represents the inaugural wave of Seiko's dedicated corporate executive watches. Created to provide post-war Japan's rising white-collar workforce with high-grade dual-calendar utility, this 27-jewel reference served as the crucial evolutionary bridge between the earlier Seikomatic series and the upper-tier Lord Matic lineup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Over-Engineered 27-Jewel Caliber 8346 Automatic Heart:\u003c\/b\u003e Powering this historic timepiece is the refined **27-jewel Caliber 8346A**, an in-house automatic engine operating at a steady frequency of **18,000 vibrations per hour (vph)**. Equipping an executive dress watch in **1966** with an over-engineered **27-jewel specification** minimized gear-train pivot friction to ensure long-term rate stability, while offering modern operational conveniences including **hacking seconds**, quick-set date control, and manual-winding capability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"8000\"\" Grammar of Design Case and Recessed Crown:\u003c\/b\u003e Sourced in a solid stainless steel case, the reference **8346-8000** exhibits classic early **\"\"Grammar of Design\"\"** principles, featuring sharp, sweeping lug chamfers and broad zero-distortion Zaratsu-polished side bevels. Designed with a slim bezel and Suwa's signature **recessed crown positioned flush at 4 o'clock**, the case maintains an uncluttered, crownless outer profile that glides effortlessly under a formal shirt cuff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMasterful Dual-Calendar Dial Layout and Executive Typography:\u003c\/b\u003e The dial of the **8346-8000** showcases clinical mid-1960s visual balance, displaying a radiant silver sunburst canvas decorated with **hand-applied, multifaceted rectangular hour indices**. Framed neatly at 3 o'clock is a dual-calendar aperture housing both the day and date wheels, anchored symmetrically by the applied stylized **\"\"Business-A\"\"** logo and **\"\"27 JEWELS\"\"** designation above 6 o'clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAn Investment-Grade Pillar of Suwa's Executive Heritage:\u003c\/b\u003e Manufactured in the milestone mechanical year of **1966**, the 8346-8000 27-jewel Business-A remains a highly sought-after, universally respected cornerstone reference for vintage Seiko purists. It stands as an essential historical artifact capturing the exact era where Seiko pioneered specialized executive timepieces tailored for Japan's emerging corporate leaders.\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\/t1241041059.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":52231435747649,"sku":"t1241041059","price":75000.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_21eef8e7-9826-4321-b60d-b3190033cfe9.jpg?v=1789620172","url":"https:\/\/nonkun.com\/en\/products\/vintage-1966-japan-seiko-83-seikomatic-r-8346-8000-27jewels-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}