{"product_id":"vintage-1962-s-japan-seiko-sportsmatic-calendar-j13057-19jewels-automatic","title":"Vintage 1962’s JAPAN SEIKO SPORTSMATIC CALENDAR J13057 19Jewels Automatic.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1962’s JAPAN SEIKO SPORTSMATIC CALENDAR J13057 19Jewels 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\u003eSPORTSMATIC CALENDAR J13057 19Jewels \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 : SPORTSMATIC CALENDAR .\u003c\/li\u003e\n\u003cli\u003eCaliber number : 790.\u003c\/li\u003e\n\u003cli\u003eMovement : Automatic.\u003c\/li\u003e\n\u003cli\u003eBeat rate : 18000bph.\u003c\/li\u003e\n\u003cli\u003eYear of manufacture start : 1962'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 : D205303.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN MADE SMAC J13H285ED.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 36.7mm.\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\u003eQuick set(Day\/Date) : Okay.\u003cbr\u003eSet the date: Iteration the hour hand at 9:00 and 12:00\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 Holy-Grail Founding Era of Sportsmatic Calendar Horology (1962):\u003c\/b\u003e Manufactured in **1962**—during the foundational dawn of Suwa Seikosha's automatic calendar development—the **Seiko Sportsmatic Calendar** reference **J13057** represents one of the earliest dedicated date-automatic sports-dress watches produced by Seiko. Identified by its historic pre-1965 five-digit reference code, this model established the versatile, water-resistant daily automatic template that would capture the global market throughout the 1960s.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Historic 19-Jewel Caliber 820 Automatic Engine:\u003c\/b\u003e Powering this rare timepiece is the early **19-jewel Caliber 820** (later integrated into the 7625 movement family), operating at a classic frequency of **18,000 vibrations per hour (vph)**. Engineered for dependable daily service, this movement incorporates Suwa's proprietary **Diashock** anti-shock architecture, the high-efficiency Magic Lever self-winding mechanism, and a semi-quickset date changing function operated by cycling the hands across midnight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"J13057\"\" Case and Integrated Recessed Crown:\u003c\/b\u003e Sourced in a heavy-gauge solid stainless steel case, the reference **J13057** exhibits early pre-Grammar of Design aesthetic hallmarks, featuring bold, sharp-tapering lugs and broad polished side bevels. Designed with a slim bezel profile and Suwa's signature **recessed crown hidden flush at 4 o'clock**, the case achieves a completely seamless, symmetrical silhouette that rests flat and commanding on the wrist.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHistoric Cross-Pattern Sunburst Dial and Early Script Detailing:\u003c\/b\u003e The dial of the **J13057** displays early-1960s executive artistry, frequently featuring a fine cross-hatched or radiant silver sunburst texture set with **hand-applied, multifaceted rectangular hour indices** and sharp razor-edged dauphine hands. Free from day-window clutter, the neatly framed date aperture at 3 o'clock is symmetrically balanced by the script **\"\"Seiko Sportsmatic\"\"** logo, **\"\"Calendar\"\"** designation, and **\"\"WATER PROOF \/ DIASHOCK 19 JEWELS\"\"** text above 6 o'clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Sovereign Solid Gold Dolphin Case Back Medallion:\u003c\/b\u003e The ultimate seal of historical authenticity rests on the case back: the iconic **solid gold-embossed Seiko Dolphin medallion** (or deeply etched early crown\/dolphin emblem) set into the case center. Certifying its factory-regulated precision and early water-resistant construction, the 1962 J13057 19-jewel Sportsmatic Calendar stands as a highly coveted, investment-grade cornerstone reference for serious vintage Seiko purists.\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\/m1239603115.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":52219398586689,"sku":"m1239603115","price":63900.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_1264db27-738d-4d06-87cb-e3fffe4321ec.jpg?v=1789435768","url":"https:\/\/nonkun.com\/products\/vintage-1962-s-japan-seiko-sportsmatic-calendar-j13057-19jewels-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}