Vintage 1974 JAPAN KING SEIKO CHRONOMETER WEEKDATER 5626-7041 25J Automatic.

Vintage 1974 JAPAN KING SEIKO CHRONOMETER WEEKDATER 5626-7041 25Jewels Automatic.

Welcome to my auction!
I am Japanese who live in Tokyo.

Item description

Movement :

• Pet name : 56 KING SEIKO CHRONOMETER WEEKDATER .
• Caliber number : 5626A,B.
• Movement : Automatic.
• Beat rate : 28800bph.
• Year of manufacture start : 1969's.
• Factory : Suwa.

Externals :

• Serial number : 450993.
• Dial number : JAPAN 5626-7041T.
• Glass : Crystal.
• Case size : About 36.55mm.
• Lug width : 18mm.
• Band : New Leather Strap of SEIKO original.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  Set the day of the week can be in English or Japanese.
  Set of the date : The set at one stage pulling the crown.
• 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 High-Beat Twilight Apex of Suwa King Production (1974): Manufactured in **1974**—during the final, most refined operational years of the mechanical 56KS family—the **King Chronometer Weekdater** reference **5626-7041** represents Suwa Seikosha's ultimate evolution of dual-calendar chronometric timepieces. Carrying the official **""OFFICIALLY CERTIFIED CHRONOMETER""** rating, this late-series entry stands at the absolute apex of factory-regulated performance for mid-1970s automatic dress watches.

The Legendary High-Beat 25-Jewel Caliber 5626 Engine: Powering this elite instrument is the regulated **25-jewel Caliber 5626B**, an in-house automatic engine operating at a swift high-beat frequency of **28,800 vibrations per hour (8 beats per second)**. Built for demanding chronometer-grade tolerances, this 25-jewel movement features **hacking seconds**, smooth manual-winding capability, and a dual-calendar quick-set assembly driving both time and calendar functions with extreme precision.

Architectural ""7041"" Monocoque Case and Sharp Grammar of Design Facets: Sourced in a solid stainless steel case, the reference **5626-7041** features a coveted front-loading **monocoque (one-piece) case construction** designed for maximum structural rigidity and water resistance. Built strictly under Taro Tanaka's **""Grammar of Design""** guidelines, the broad sweeping lugs, razor-sharp Zaratsu-polished planes, and zero-distortion mirror surfaces create a commanding, flat profile on the wrist.

Masterful Dual-Calendar Dial Harmony and Chronometer Typography: The dial of the **5626-7041** showcases clinical mid-1970s visual harmony, featuring a radiant silver sunburst canvas decorated with **hand-applied, multifaceted rectangular block indices** with fine black central inserts. Symmetrically framed at 3 o'clock, the dual-calendar aperture houses a **bilingual (English/Kanji) day disk** and date wheel, perfectly offset by the applied **""KS"" emblem**, **""HI-BEAT""** text, and official **""CHRONOMETER""** branding above 6 o'clock.

The Sovereign Solid Gold KS Chronometer Case Back Medallion: The ultimate seal of prestige rests on the monocoque backplate: the iconic **solid gold-embossed King Chronometer medallion** set flush into the case center. Certifying its elite factory-regulated rating and historical standing as one of the final true mechanical King Chronometers of the vintage era, the 1974 5626-7041 stands as a holy-grail, investment-grade reference for collectors worldwide.

For more information, please look at the pictures.

Notes

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