{"product_id":"serviced-vintage-1972-japan-seiko-lord-matic-weekdater-5606-7190-23j-automatic","title":"Serviced Vintage 1972 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7190 23J Automatic.","description":"\u003ch3 style=\"font-size: 32px; color: #2B0000; margin-bottom: 36px;\"\u003eVintage 1972 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7190 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 5606-7190 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. : 239777.\u003c\/li\u003e\n      \u003cli\u003eDial No. : JAPAN 5606-7470T.\u003c\/li\u003e\n      \u003cli\u003eGlass : Crystal.\u003c\/li\u003e\n      \u003cli\u003eCase size : About 36.78mm.\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\u003eQuick set(Day\/Date) : Okay.\u003cbr\u003eSet the day of the week can be in English or Kanji. \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 1972 Executive Prestige (1972):\u003c\/b\u003e Manufactured in \u003cb\u003e1972\u003c\/b\u003e—a milestone historic year during Japan's peak post-war industrial era and the golden age of mechanical horology—the \u003cb\u003eSeiko Lord Matic Weekdater\u003c\/b\u003e represented the definitive standard of mid-century corporate luxury. Born from the prestigious \u003cb\u003eSuwa Seikosha\u003c\/b\u003e factory under reference \u003cb\u003e5606-7190\u003c\/b\u003e, this flagship model sat directly below the King Seiko series, delivering high-grade mechanical refinement wrapped in forward-looking 1970s 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 5606\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 daily stability, this movement features a \u003cb\u003e23-jewel specification\u003c\/b\u003e to control gear-train friction. It incorporates modern 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 \"7190\" Grammar of Design Case Geometry:\u003c\/b\u003e The reference \u003cb\u003e5606-7190\u003c\/b\u003e is globally distinguished among vintage collectors for its striking, broad-shouldered case architecture. The solid stainless steel case features sharp, angular facets and sweeping lugs finished with zero-distortion mirror polishing inspired by Taro Tanaka's \u003cb\u003e\"Grammar of Design\"\u003c\/b\u003e guidelines. This low center-of-gravity engineering allows the watch to sit completely flush against the wrist, sliding weightlessly under a tailored executive 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\u003e5606-7190\u003c\/b\u003e is a study in 1970s visual balance, showcasing a radiant silver sunburst canvas paired with \u003cb\u003ehand-applied, multifaceted hour indices\u003c\/b\u003e and razor-sharp hands that catch light with high contrast. Positioned neatly 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, perfectly anchored by the applied metal \u003cb\u003e\"LM\" emblem\u003c\/b\u003e and \u003cb\u003e\"23 JEWELS\"\u003c\/b\u003e text 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\u003e1972\u003c\/b\u003e, the 5606-7190 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 watch industry shifted toward 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      \u003c\/div\u003e\n\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Seiko","offers":[{"title":"Default Title","offer_id":68031293456705,"sku":"d1241797266","price":96400.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/8205\/0625\/files\/57_3503d2b2-d5f7-4bda-9a04-cc4c189d48ae.jpg?v=1792804015","url":"https:\/\/nonkun.com\/products\/serviced-vintage-1972-japan-seiko-lord-matic-weekdater-5606-7190-23j-automatic","provider":"NONKUN Japan","version":"1.0","type":"link"}