{"product_id":"vintage-1966-japan-seiko-skyliner-6220-9970-21jewels-hand-winding","title":"Vintage 1966 JAPAN SEIKO SKYLINER 6220-9970 21Jewels Hand-winding.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1966 JAPAN SEIKO SKYLINER 6220-9970 21Jewels Hand-winding.\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 Hand-winding Watch, \u003cb\u003eSKYLINER 6220-9970 21Jewels \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 : SKYLINER .\u003c\/li\u003e\n\u003cli\u003eCaliber number : 6220B,C.\u003c\/li\u003e\n\u003cli\u003eMovement : Hand-winding.\u003c\/li\u003e\n\u003cli\u003eBeat rate : 18000bph.\u003c\/li\u003e\n\u003cli\u003eYear of manufacture start : 1961'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 : 6206083.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN  6220-9960R.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 37mm.\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\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 Benchmark of Mid-60s Manual Dress Elegance (1966):\u003c\/b\u003e Manufactured in **1966**—a landmark historical year defined by Japan's rapid post-war economic boom and horological leadership—the **Seiko Skyliner** stood as Suwa Seikosha's definitive statement in sleek, ultra-thin manual-wind luxury. Sourced under reference **6220-9970**, this mid-1960s dress timepiece was designed for discerning executives who favored refined, understated mechanical purity over bulky automatic configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Ultra-Slim 21-Jewel Caliber 6220 Hand-Winding Heart:\u003c\/b\u003e Powering this historic instrument is the revered **21-jewel Caliber 6220A**, an in-house manual-wind movement operating at a steady frequency of **18,000 vibrations per hour (vph)**. Highly celebrated by vintage purists for its remarkably thin profile and robust gear-train construction, this **21-jewel specification** minimized mechanical friction while incorporating Seiko's **Diashock** anti-shock architecture for dependable daily reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"9970\"\" Slim Case Geometry and Dress Contours:\u003c\/b\u003e The reference **6220-9970** is globally distinguished among vintage collectors for its classic, ultra-slim stainless steel case architecture. Featuring sleek, sharp-faceted lugs and broad-shouldered polished bevels designed according to Taro Tanaka's early **\"\"Grammar of Design\"\"** guidelines, the case delivers a low center-of-gravity wrist profile that glides weightlessly under a tailored executive cuff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImmaculate Non-Date Dial Balance and Sunburst Radiance:\u003c\/b\u003e The dial of the **6220-9970** is a masterclass in mid-century visual restraint and symmetrical clarity, showcasing a radiant silver sunburst canvas free from calendar clutter. It features **hand-applied, multifaceted rectangular hour indices**—with a distinct textured double index at 12 o'clock—and razor-sharp dauphine hands that catch light with high contrast, proudly bearing the applied **\"\"Seiko Skyliner\"\"** logo and \"\"Water 30 Proof\"\" typography above 6 o'clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAn Investment-Grade Masterpiece of Suwa's Manual Legacy:\u003c\/b\u003e Manufactured in the milestone horological year of **1966**, the 6220-9970 21-jewel Skyliner remains an extraordinarily popular, universally respected cornerstone reference for serious vintage Seiko collectors worldwide. It captures the exact historical moment where Suwa Seikosha perfected ultra-thin manual dress instruments right before the industry pivoted toward high-beat and quartz technology. Built to an uncompromising heirloom standard, it stands as an eternal testament to mid-1960s Japanese horological design.\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\/1232915708.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":52093211967809,"sku":"1232915708","price":71200.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_fcd96aab-acd5-4f34-9eff-4bd376eea04b.jpg?v=1787017736","url":"https:\/\/nonkun.com\/products\/vintage-1966-japan-seiko-skyliner-6220-9970-21jewels-hand-winding","provider":"NONKUN Japan","version":"1.0","type":"link"}