{"product_id":"serviced-vintage-1963-japan-seiko-sportsmatic-j13058-17jewels-automatic","title":"Serviced Vintage 1963 JAPAN SEIKO SPORTSMATIC J13058 17Jewels Automatic.","description":"\u003ch3 style=\"font-size: 32px; color: #2B0000; margin-bottom: 36px;\"\u003eVintage 1963 JAPAN SEIKO SPORTSMATIC J13058 17Jewels 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\u003eSPORTSMATIC J13058 17Jewels \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 : SPORTSMATIC .\u003c\/li\u003e\n      \u003cli\u003eCaliber No. : 2451.\u003c\/li\u003e\n      \u003cli\u003eMovement : Automatic.\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\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. : 3103217.\u003c\/li\u003e\n      \u003cli\u003eDial No. : JAPAN SMAJ13H308ED.\u003c\/li\u003e\n      \u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n      \u003cli\u003eCase size : About 36.2mm.\u003c\/li\u003e\n      \u003cli\u003eLug width : 18mm.\u003c\/li\u003e\n      \u003cli\u003eBand : New Leather Strap.\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\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 Inaugural Dawn of Seiko's Sportsmatic Lineage (1963):\u003c\/b\u003e Manufactured in \u003cb\u003e1963\u003c\/b\u003e—a historic year preceding the 1964 Tokyo Olympics—the \u003cb\u003eSeiko Sportsmatic\u003c\/b\u003e reference \u003cb\u003eJ13058\u003c\/b\u003e represents the foundational genesis of Suwa Seikosha's sports-executive automatics. Predating the standardized 4-digit case numbering system and the launch of the Seiko 5 family, this pre-Grammar of Design classic established the blueprint for accessible, high-durability automatic wristwatches in post-war Japan.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eThe Workhorse 17-Jewel Caliber 290 (Seikomatic) Engine:\u003c\/b\u003e Powering this historic timepiece is the robust \u003cb\u003e17-jewel Caliber 290\u003c\/b\u003e (later integrated into the 76 series family), operating at a steady frequency of \u003cb\u003e18,000 vibrations per hour (vph)\u003c\/b\u003e. Built specifically for everyday operational reliability, this automatic movement incorporates Seiko's proprietary \u003cb\u003eDiashock\u003c\/b\u003e anti-shock mechanism and efficient Magic Lever winding system to maintain stable timekeeping under active daily wear.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eArchitectural \"J13058\" Classic Case and Recessed Crown Integration:\u003c\/b\u003e Sourced in a solid stainless steel case, the reference \u003cb\u003eJ13058\u003c\/b\u003e features sweeping, full-bodied lugs with subtle polished bevels and a low-profile bezel architecture. Designed with the signature early \u003cb\u003erecessed crown tucked flush at 4 o'clock\u003c\/b\u003e, the case achieves a completely smooth, crownless outer profile that prevents wrist bite and glides easily under shirt cuffs.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eImmaculate Time-Only\/Date Dial Harmony and Mid-Century Restraint:\u003c\/b\u003e The dial of the \u003cb\u003eJ13058\u003c\/b\u003e is an exercise in early-1960s visual purity, featuring a radiant silver sunburst background set with \u003cb\u003ehand-applied, multifaceted rectangular indices\u003c\/b\u003e and razor-edged dauphine hands. The clean dial layout is anchored by the classic script \u003cb\u003e\"Sportsmatic\"\u003c\/b\u003e logo and \u003cb\u003e17 Jewels\u003c\/b\u003e designation above 6 o'clock, flanked by the distinct Suwa factory insignia.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eThe Sovereign Engraved Dolphin Case Back Crest Heritage:\u003c\/b\u003e The ultimate mark of authenticity rests on the case back: the deeply etched \u003cb\u003eSeiko Dolphin crest\u003c\/b\u003e, historically certifying its factory-regulated precision and water-resistant case construction. As a rare pre-1964 transition reference, the 1963 J13058 Sportsmatic stands as an essential, investment-grade cornerstone reference for collectors tracing the roots of Seiko's modern sports-automatic legacy.\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\/w1232891429.jpg\" alt=\"Seiko Sportsmatic 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":68079012249921,"sku":"w1232891429","price":48700.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_d58db866-0754-4147-b8c2-4dae45631d1b.jpg?v=1793158568","url":"https:\/\/nonkun.com\/products\/serviced-vintage-1963-japan-seiko-sportsmatic-j13058-17jewels-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}