{"product_id":"vintage-1978-japan-seiko-king-quartz-5856-7030-8jewels-quartz","title":"Vintage 1978 JAPAN SEIKO KING QUARTZ 5856-7030 8Jewels Quartz.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1978 JAPAN SEIKO KING QUARTZ 5856-7030 8Jewels Quartz.\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 Quartz Watch, \u003cb\u003eKING QUARTZ 5856-7030 8Jewels \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 : 58　KING QUARTZ.\u003c\/li\u003e\n\u003cli\u003eCaliber number : 5856A.\u003c\/li\u003e\n\u003cli\u003eMovement : Quartz.\u003c\/li\u003e\n\u003cli\u003eYear of manufacture start : 1978'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 : 841080.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN 5856-7040S.\u003c\/li\u003e\n\u003cli\u003eGlass : Crystal.\u003c\/li\u003e\n\u003cli\u003eCase size : About 34.02mm.\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.\u003cb\u003e Battery replaced\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003eQuick set(Day\/Date) : Okay.  \u003cbr\u003eSet the day of the week can be in English or Kanji. \u003cbr\u003eSet of the date : The set at one stage pulling the crown.\u003c\/li\u003e\n\u003cli\u003eApproximate watch rate at Japan : Quartz.\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 High-Precision Dawn of Late-70s King Quartz Executive Luxury (1978):\u003c\/b\u003e Manufactured in **1978**—at the absolute height of Suwa Seikosha's quartz precision revolution—the **Seiko King Quartz** reference **5856-7030** inherited the prestige, finishing standards, and executive positioning of the legendary King Seiko line. As mechanical production scaled down in the late 1970s, the King Quartz series stood as Suwa's flagship high-accuracy offering for corporate professionals seeking unmatched micro-engineering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe High-Grade Caliber 5856 Dual-Jeweled Quartz Heart:\u003c\/b\u003e Powering this historic timepiece is the advanced **Caliber 5856A**, an in-houseSuwa quartz movement incorporating **8 jewels** across its gear train pivots—an extraordinarily high jewel count for a quartz movement of this era. Factory-rated to a rigorous accuracy of within **±10 seconds per month**, this movement features a quick-set dual-calendar mechanism and a second-hand hacking system designed for precise synchronization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"7030\"\" Angular Case and Late Grammar of Design Evolution:\u003c\/b\u003e Sourced in a solid stainless steel case, the reference **5856-7030** represents the late-1970s evolution of Taro Tanaka's **\"\"Grammar of Design\"\"** principles. Featuring sharp angular shoulders, flat Zaratsu-polished geometric facets, and a seamlessly integrated bracelet hood, the case profile reflects ambient light with razor-sharp, zero-distortion mirror reflections while maintaining a ultra-sleek, wrist-hugging profile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTextured Dual-Calendar Dial Harmony and Applied Double-Quartz Symbol:\u003c\/b\u003e The dial of the **5856-7030** displays supreme late-70s artistry, set against a subtly textured matte dial canvas decorated with **hand-applied, multifaceted rectangular block indices**. Positioned at 3 o'clock is a neatly framed dual-calendar aperture housing a **bilingual (English\/Kanji) day disk** and date wheel, proudly anchored by the applied metal **\"\"KQ\"\" (King Quartz)** logo and Suwa's iconic twin-quartz crystal insignia above 6 o'clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAn Investment-Grade Masterpiece of Suwa's High-Precision Heritage:\u003c\/b\u003e Produced during the milestone golden era of Japanese quartz mastery in **1978**, the 5856-7030 King Quartz remains a highly sought-after, universally respected cornerstone reference for vintage Seiko collectors. It captures the exact historical moment where the uncompromising craftsmanship of King Seiko intersected with world-leading solid-state timekeeping technology.\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\/u1229117282.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":52213672182081,"sku":"u1229117282","price":74800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_65a3065a-edca-4070-bca7-dbe49ebb87af.jpg?v=1789345377","url":"https:\/\/nonkun.com\/en\/products\/vintage-1978-japan-seiko-king-quartz-5856-7030-8jewels-quartz","provider":"NONKUN Japan","version":"1.0","type":"link"}