{"product_id":"vintage-1966-japan-seiko-skyliner-6220-7020-21jewels-hand-winding","title":"Vintage 1966 JAPAN SEIKO SKYLINER 6220-7020 21Jewels Hand-winding.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1966 JAPAN SEIKO SKYLINER 6220-7020 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 6220-7020 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 : 6401835.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN 6220-7040T AD.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 33.7mm.\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\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 Ultra-Slim Dress Elegance (1966):\u003c\/b\u003e Manufactured in **1966**—a pivotal year during Suwa Seikosha's mechanical golden age—the **Seiko Skyliner** reference **6220-7020** represented the pinnacle of accessible, ultra-thin manual-wind dress watches. Designed for business professionals seeking a clean, low-profile alternative to heavy automatics, the Skyliner line emphasized sleek minimalism and refined Japanese tailoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Ultra-Slim 21-Jewel Caliber 6220 Manual-Wind Engine:\u003c\/b\u003e Powering this historic timepiece is the refined **21-jewel Caliber 6220A**, a dedicated hand-wound movement operating at a classic frequency of **18,000 vibrations per hour (vph)**. By eliminating the automatic winding rotor assembly, Suwa engineers achieved a remarkably thin movement profile. The high-jewel count of **21 rubies** ensured minimal gear-train friction and excellent long-term operational accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"7020\"\" Sharp-Lugging Case Geometry:\u003c\/b\u003e Sourced in a solid stainless steel case, the reference **6220-7020** showcases classic early **\"\"Grammar of Design\"\"** cues with its sharp, angular lug geometry and broad, zero-distortion Zaratsu-polished side bevels. Its low center of gravity and razor-thin bezel allow the watch to sit completely flush against the wrist, sliding effortlessly under a formal shirt cuff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImmaculate Time-Only Dial Purity and Minimalist Clarity:\u003c\/b\u003e The dial of the **6220-7020** is a study in mid-century visual restraint, displaying a radiant silver sunburst canvas uninterrupted by date or day windows. It features **hand-applied, multifaceted rectangular hour indices**—with a prominent double index at 12 o'clock—and razor-sharp cross-section hands, proudly signed with the stylized **\"\"Skyliner\"\"** script typography above 6 o'clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAn Investment-Grade Classic of Suwa's Manual-Wind Legacy:\u003c\/b\u003e Manufactured in the milestone mechanical year of **1966**, the 6220-7020 21-jewel Seiko Skyliner stands as an uncommonly clean, highly respected cornerstone reference for vintage Seiko collectors. It captures the exact moment Suwa Seikosha mastered thin-profile dress watch architecture during the peak of mid-century Japanese horology.\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\/f1241175757.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\"","brand":"Seiko","offers":[{"title":"Default Title","offer_id":52180009779521,"sku":"f1241175757","price":85800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_ff0d3681-acb5-4783-b196-f15105127f41.jpg?v=1788827038","url":"https:\/\/nonkun.com\/products\/vintage-1966-japan-seiko-skyliner-6220-7020-21jewels-hand-winding","provider":"NONKUN Japan","version":"1.0","type":"link"}