{"product_id":"serviced-vintage-1975-japan-seiko-lord-matic-weekdater-5606-8051-23j-automatic","title":"Serviced  Vintage 1975 JAPAN SEIKO LORD MATIC WEEKDATER 5606-8051 23J Automatic.","description":"\u003ch3 style=\"font-size: 32px; color: #2B0000; margin-bottom: 36px;\"\u003eVintage 1975 JAPAN SEIKO LORD MATIC WEEKDATER 5606-8051 23Jewels 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\u003eLORD MATIC WEEKDATER 5606-8051 23Jewels \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 : 56 LORD MATIC WEEKDATER .\u003c\/li\u003e\n      \u003cli\u003eCaliber No. : 5606A.\u003c\/li\u003e\n      \u003cli\u003eMovement : Automatic.\u003c\/li\u003e\n      \u003cli\u003eBeat rate : 21600bph.\u003c\/li\u003e\n      \u003cli\u003eYear of manufacture start : 1968'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. : 5N6146.\u003c\/li\u003e\n      \u003cli\u003eDial No. : JAPAN5606-8080T.\u003c\/li\u003e\n      \u003cli\u003eGlass : Crystal.\u003c\/li\u003e\n      \u003cli\u003eCase size : About 36.5mm.\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\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\u003eQuick set(Day\/Date) : Okay. \u003cbr\u003eSet the day of the week can be in English or Japanese. \u003cbr\u003eSet of the date : The set at one stage pulling the crown.\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 October 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 Sovereign Peak of Mid-70s Executive Luxury (1975):\u003c\/b\u003e Manufactured in \u003cb\u003e1975\u003c\/b\u003e—a pivotal historical year during Japan's mature post-war economic boom and the twilight of the golden age of mechanical horology—the \u003cb\u003eSeiko Lord Matic Weekdater\u003c\/b\u003e stood as the quintessential executive dress watch. Born from the prestigious \u003cb\u003eSuwa Seikosha\u003c\/b\u003e factory under reference \u003cb\u003e5606-8051\u003c\/b\u003e, this mid-1970s flagship sat directly beneath the King Seiko lineup, offering near-chronometer-grade mechanical performance paired with refined Showa-era styling.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eThe Over-Engineered 23-Jewel Caliber 5606 Automatic Heart:\u003c\/b\u003e Powering this historic instrument is the revered \u003cb\u003e23-jewel Caliber 5606A\u003c\/b\u003e, an in-house automatic engine operating at a smooth frequency of \u003cb\u003e21,600 vibrations per hour (vph)\u003c\/b\u003e. Celebrated by vintage purists for its remarkably thin profile and long-term daily stability, this movement deploys a lavish \u003cb\u003e23-jewel specification\u003c\/b\u003e to control gear-train friction. It features key executive conveniences including \u003cb\u003ehacking seconds\u003c\/b\u003e, quick-set dual calendar functionality, and smooth manual-winding capability.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eArchitectural \"8051\" Grammar of Design Case Geometry:\u003c\/b\u003e The reference \u003cb\u003e5606-8051\u003c\/b\u003e is globally distinguished among vintage Seiko collectors for its sharp execution of Taro Tanaka's \u003cb\u003e\"Grammar of Design\"\u003c\/b\u003e principles. Executed in solid stainless steel, the case features razor-sharp angular facets, bold sweeping lugs, and zero-distortion mirror-polished Zaratsu planes. This low center-of-gravity engineering allows the mechanical instrument to sit completely flush against the wrist, sliding effortlessly under a tailored shirt cuff.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eMasterful \"Weekdater\" Dial Harmony and Bilingual Utility:\u003c\/b\u003e The dial of the \u003cb\u003e5606-8051\u003c\/b\u003e is a masterclass in mid-1970s visual balance, showcasing a radiant silver sunburst or richly colored canvas decorated with \u003cb\u003ehand-applied, multifaceted hour indices\u003c\/b\u003e and sharp hands that catch light with high contrast. Symmetrically framed at 3 o'clock, the dual-calendar window houses a \u003cb\u003ebilingual (English\/Kanji) day disk\u003c\/b\u003e alongside a quick-set date wheel, offset by the applied polished \u003cb\u003e\"LM\" emblem\u003c\/b\u003e above 6 o'clock.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cb\u003eAn Investment-Grade Masterpiece of Suwa's Automatic Heritage:\u003c\/b\u003e Manufactured in the milestone mechanical year of \u003cb\u003e1975\u003c\/b\u003e, the 5606-8051 23-jewel Lord Matic Weekdater remains a highly coveted, universally respected cornerstone reference for serious vintage Seiko collectors worldwide. It captures the exact historical moment where Suwa Seikosha perfected high-utility automatic daily instruments right before the global industry shifted toward digital quartz technology. Built to an uncompromising heirloom standard, it stands as an eternal testament to 1970s Japanese horological design.\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\/m1241935223.jpg\" alt=\"Seiko Lord Matic 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":67993908969793,"sku":"m1241935223","price":67800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_53564f7f-204b-4b82-a4d4-ef4406a57bfd.jpg?v=1792717683","url":"https:\/\/nonkun.com\/products\/serviced-vintage-1975-japan-seiko-lord-matic-weekdater-5606-8051-23j-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}