{"product_id":"vintage-1964-japan-seiko-sportsmatic5-dx-7606-7991-23jewels-automatic-1","title":"Vintage 1964 JAPAN SEIKO SPORTSMATIC5 DX 7606-7991 23Jewels Automatic.","description":"\u003cdiv style=\"display: none;\"\u003e\n\u003ch1\u003eVintage 1964 JAPAN SEIKO SPORTSMATIC5 DX 7606-7991 23Jewels Automatic.\u003c\/h1\u003e\nVintage 1964 JAPAN SEIKO SPORTSMATIC5 DX 7606-7991 23Jewels Automatic.Welcome to my auction!I am Japanese who live in Tokyo. Item description It's a SEIKO Automatic Watch, SPORTSMATIC5 DX 7606-7991 23Jewels . It's in good used condition. It's difficult to find this valuable watch in such a good condition. Highly recommended for SEIKO collectors! Movement : Pet name : SPORTSMATIC5 DX .Caliber number : 7606A.Movement : Automatic.Beat rate : 18000bph.Year of manufacture start : 1964's.Factory : Kameido.Externals : Serial number : 4003979.Dial number : MADE IN JAPAN 42799 TO.Glass : Acrylic.Case size : About 37mm.Lug width : 19mm.Band : New Leather Strap of SEIKO original.Condition : Used, it runs well.Quick set(Day\/Date) : Okay.Set the day of the week : English only.Set of the date: Press the button near the 3:00 position.Set of the days of the week : Turn the hour hand for 24 hours to set it.The day difference time of an used watch is about +-1 minute \/ day.For practical, everyday use, it would be advisable to have the movement cleaned and oiled.Key Features The Genesis of Olympic-Era Deluxe Automation (1964): In **1964**—a monumental landmark year highlighted by the Tokyo Olympics and Japan's grand debut onto the global industrial stage—the **Seiko Sportsmatic 5 DX (Deluxe)** stood as a premier lifestyle statement. Sourced from the prestigious **Suwa Seikosha** factory under reference **7606-7991**, this historic masterpiece was engineered as the absolute pioneer of high-jewel sports luxury. Explicitly designed for the nation's rising corporate leadership class, it captured the intense national pride and engineering optimism of the early Showa economic miracle. The Over-Engineered 23-Jewel Caliber 7606 First-Generation Heart: This legendary watch is powered by the magnificent **23-jewel Caliber 7606**, a high-grade foundational automatic movement operating at a classic frequency of **18,000 vibrations per hour (vph)**. In **1964**, deploying a **23-jewel specification** for an everyday sport-dress watch was an incredible statement of mechanical complexity. Utilizing a lavish count of synthetic rubies to secure vital gear-train pivots and optimize auto-winding efficiency, this caliber laid the technical groundwork for the entire Deluxe lineage. Architectural \"\"7991\"\" Mid-Century Case Mastery and Recessed Crown: The reference **7606-7991** is highly celebrated among vintage purists for its substantial, commanding dress proportions. The solid stainless steel case features exceptionally sharp geometric facets and wide, beautifully tapered lugs finished with zero-distortion mirror polishing. Adhering to the core identity of the early \"\"5\"\" series, it houses a **completely recessed time-setting crown at 4 o'clock**—visual proof that manual winding was fully obsolete due to the high efficiency of its internal automatic weight system. The Revolutionary Dedicated Calendar Quick-Set Push-Button: One of the most famous, historically significant engineering traits of the Caliber 7606 is its **independent calendar push-button beautifully integrated near the 1 o'clock position**. By simply depressing this dedicated button inward flush with the case, the user could instantly advance the inner date disk forward by one day without interacting with the main hands. The dial houses a beautifully framed calendar window at 3 o'clock, perfectly balancing the gorgeous silver sunburst canvas and hand-applied indices. The Sovereign Pride of the Initial Dolphin Legacy: Manufactured in the milestone mechanical year of **1964**, the 7606-7991 23-jewel variant remains a highly coveted, investment-grade cornerstone reference for serious vintage Seiko enthusiasts worldwide. The ultimate hallmark of its premium sporting and engineering pedigree sits on the screw-down case back: a **beautifully crisp, etched Dolphin insignia**, which historically certified its rugged daily durability and water-resistant status. It stands as a profound testament to an era when Suwa perfected the luxury automatic daily instrument to an eternal standard. For more information, please look at the pictures. Notes Before buying.The 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. To prevent shipping accidents.Please 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. About import taxes.Taxes 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. About Payment, Shipping, Return.Payment, Shipping, Return are in accordance with eBay's business policies. \u003c\/div\u003e\n\n\n\u003cbr\u003e\u003ch3 style=\"font-size: 32px; color : #2B0000; margin-bottom: 36px;\"\u003eVintage 1964 JAPAN SEIKO SPORTSMATIC5 DX 7606-7991 23Jewels 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\u003eSPORTSMATIC5 DX 7606-7991 23Jewels \u003c\/b\u003e.\u003cbr\u003e\n\u003cb\u003eIt's in good uséd 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 : SPORTSMATIC5 DX .\u003c\/li\u003e\n\u003cli\u003eCaliber number : 7606A.\u003c\/li\u003e\n\u003cli\u003eMovement : Automatic.\u003c\/li\u003e\n\u003cli\u003eBeat rate : 18000bph.\u003c\/li\u003e\n\u003cli\u003eYear of manufacture start : 1964's.\u003c\/li\u003e\n\u003cli\u003eFactory : Kameido.\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 : 4003979.\u003c\/li\u003e\n\u003cli\u003eDial number : MADE IN JAPAN 42799 TO.\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\u003eUséd, it runs well.\u003c\/li\u003e\n\u003cli\u003eQuick set(Day\/Date) : Okay.\u003cbr\u003eSet the day of the week : English only.\u003cbr\u003eSet of the date: Press the button near the 3:00 position.\u003cbr\u003eSet of the days of the week : Turn the hour hand for 24 hours to set it.\u003c\/li\u003e\n\u003cli\u003eThe day difference time of an uséd 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 Genesis of Olympic-Era Deluxe Automation (1964):\u003c\/b\u003e In **1964**—a monumental landmark year highlighted by the Tokyo Olympics and Japan's grand debut onto the global industrial stage—the **Seiko Sportsmatic 5 DX (Deluxe)** stood as a premier lifestyle statement. Sourced from the prestigious **Suwa Seikosha** factory under reference **7606-7991**, this historic masterpiece was engineered as the absolute pioneer of high-jewel sports luxury. Explicitly designed for the nation's rising corporate leadership class, it captured the intense national pride and engineering optimism of the early Showa economic miracle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Over-Engineered 23-Jewel Caliber 7606 First-Generation Heart:\u003c\/b\u003e This legendary watch is powered by the magnificent **23-jewel Caliber 7606**, a high-grade foundational automatic movement operating at a classic frequency of **18,000 vibrations per hour (vph)**. In **1964**, deploying a **23-jewel specification** for an everyday sport-dress watch was an incredible statement of mechanical complexity. Utilizing a lavish count of synthetic rubies to secure vital gear-train pivots and optimize auto-winding efficiency, this caliber laid the technical groundwork for the entire Deluxe lineage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eArchitectural \"\"7991\"\" Mid-Century Case Mastery and Recessed Crown:\u003c\/b\u003e The reference **7606-7991** is highly celebrated among vintage purists for its substantial, commanding dress proportions. The solid stainless steel case features exceptionally sharp geometric facets and wide, beautifully tapered lugs finished with zero-distortion mirror polishing. Adhering to the core identity of the early \"\"5\"\" series, it houses a **completely recessed time-setting crown at 4 o'clock**—visual proof that manual winding was fully obsolete due to the high efficiency of its internal automatic weight system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Revolutionary Dedicated Calendar Quick-Set Push-Button:\u003c\/b\u003e One of the most famous, historically significant engineering traits of the Caliber 7606 is its **independent calendar push-button beautifully integrated near the 1 o'clock position**. By simply depressing this dedicated button inward flush with the case, the user could instantly advance the inner date disk forward by one day without interacting with the main hands. The dial houses a beautifully framed calendar window at 3 o'clock, perfectly balancing the gorgeous silver sunburst canvas and hand-applied indices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eThe Sovereign Pride of the Initial Dolphin Legacy:\u003c\/b\u003e Manufactured in the milestone mechanical year of **1964**, the 7606-7991 23-jewel variant remains a highly coveted, investment-grade cornerstone reference for serious vintage Seiko enthusiasts worldwide. The ultimate hallmark of its premium sporting and engineering pedigree sits on the screw-down case back: a **beautifully crisp, etched Dolphin insignia**, which historically certified its rugged daily durability and water-resistant status. It stands as a profound testament to an era when Suwa perfected the luxury automatic daily instrument to an eternal standard.\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\/d1234724404.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\u003cdiv style=\"text-align:center; background:#fff; padding:5px 0px 5px 0px; clear:both; width:100%;\"\u003e\n\u003cdiv style=\"padding-bottom:5px;\"\u003e\n\u003cspan\u003eeBay integration\u003c\/span\u003e by \u003c\/div\u003e\n\u003cimg width=\"120\" src=\"https:\/\/d31wxntiwn0x96.cloudfront.net\/ayjjhk\/\/images\/codisto-connect.png?width=200\u0026amp;nostretch\u0026amp;v=1\"\u003e\n\u003c\/div\u003e","brand":"NONKUN Japan","offers":[{"title":"Default Title","offer_id":52080601497921,"sku":"d1234724404","price":61800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_a62b5b71-83f4-48b4-b03b-8df073d94b84.jpg?v=1786597825","url":"https:\/\/nonkun.com\/products\/vintage-1964-japan-seiko-sportsmatic5-dx-7606-7991-23jewels-automatic-1","provider":"NONKUN Japan","version":"1.0","type":"link"}