{"product_id":"vintage-1965-japan-seiko-sea-horse-66-8980-17jewels-hand-winding","title":"Vintage 1965 JAPAN SEIKO SEA HORSE 66-8980 17Jewels Hand-winding.","description":"\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1965 JAPAN SEIKO SEA HORSE 66-8980 17Jewels 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\u003eSEA HORSE 66-8980 17Jewels \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 : SEA HORSE .\u003c\/li\u003e\n\u003cli\u003eCaliber number : 66A.\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 : 1960'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 : 5801105.\u003c\/li\u003e\n\u003cli\u003eDial number : JAPAN 66-8930T.\u003c\/li\u003e\n\u003cli\u003eGlass : Acrylic.\u003c\/li\u003e\n\u003cli\u003eCase size : About 35mm.\u003c\/li\u003e\n\u003cli\u003eLug width : 18mm.\u003c\/li\u003e\n\u003cli\u003eBand : Wrist size that can be worn is Up to about 190mm.\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 Pioneer of 1965 Water-Resistant Sports-Dress Design (1965):\u003c\/b\u003e Manufactured in **1965**—a milestone era in Japanese watchmaking immediately following the 1964 Tokyo Olympics—the **Seiko Sea Horse** reference **66-8980** represents one of Suwa Seikosha's earliest dedicated water-resistant tool-dress lines. Positioned as a rugged yet refined daily instrument for active professionals, the \"\"Sea Horse\"\" series laid the structural foundation for Seiko's iconic lineage of water-ready sports watches throughout the 1960s.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Ultra-Reliable 17-Jewel Caliber 66 Hand-Winding Workhorse:\u003c\/b\u003e Powering this historic watch is the celebrated **17-jewel Caliber 66B (or 66A)** hand-wound movement, operating at a classic frequency of **18,000 vibrations per hour (vph)**. Renowned among vintage purists for its robust simplicity and ease of servicing, this 17-jewel engine incorporates Seiko's proprietary **Diashock** shock-absorption system, delivering exceptional daily durability, smooth tactile manual-winding, and steady timekeeping performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"8980\"\" Stainless Steel Case \u0026amp; Screw-Down Back:\u003c\/b\u003e Sourced in a solid stainless steel case, the reference **66-8980** features sharp, sweeping dress lugs with polished chamfers and strong mid-century proportions. Unlike standard dress watches of the mid-1960s that utilized snap-on backs, the Sea Horse was built with a heavy-duty **screw-down case back** and gasket-sealed crown, engineered specifically to guard against moisture and dust ingress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eImmaculate Non-Date Dial Balance and Cursive Typography:\u003c\/b\u003e The dial of the **66-8980** is a masterclass in classic mid-century visual purity, set against a radiant silver sunburst canvas free from calendar interruptions. It features **hand-applied, multifaceted rectangular hour indices** paired with sharp dauphine hands. The lower dial is proudly signed with the iconic flowing **\"\"Sea Horse\"\" cursive script**, along with **\"\"WATERPROOF\"\"** and **\"\"DIASHOCK 17 JEWELS\"\"** text above 6 o'clock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Sovereign Sea Horse Case Back Medallion \/ Etching:\u003c\/b\u003e The ultimate hallmark of authenticity sits on the case back: the iconic **engraved Sea Horse motif** (or seahorse insignia alongside the waterproof text). Certifying its specialized factory status within Suwa Seikosha's early water-resistant lineup, the 1965 Seiko Sea Horse 66-8980 remains a highly coveted, investment-grade cornerstone reference for collectors of mid-60s Japanese horological heritage.\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\/p1236242272.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":52247579099457,"sku":"p1236242272","price":80400.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_fb130d38-187c-4ca8-a4cf-37bc3faa6f2c.jpg?v=1790075103","url":"https:\/\/nonkun.com\/products\/vintage-1965-japan-seiko-sea-horse-66-8980-17jewels-hand-winding","provider":"NONKUN Japan","version":"1.0","type":"link"}