Vintage 1973 JAPAN KING SEIKO CHRONOMETER SPECIAL 5245-6000 25Jewels Automatic.

Vintage 1973 JAPAN KING SEIKO CHRONOMETER SPECIAL 5245-6000 25Jewels Automatic.

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

Item description

Movement :

• Pet name : 52 KING SEIKO CHRONOMETER SPECIAL (CALENDAR) .
• Caliber number : 5245A.
• Movement : Automatic.
• Beat rate : 28800bph.
• Year of manufacture start : 1971's.
• Factory : Kameido.

Externals :

• Serial number : 360114.
• Dial number : JAPAN 5245-6000R.
• Glass : Crystal.
• Case size : About 35mm.
• Lug width : 18mm.
• Band : New Leather Strap of SEIKO original.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  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 Sovereign Apex of 1973 Kameido Chronometry (1973): Manufactured in **1973**—a historic milestone year during the golden age of high-grade mechanical watchmaking—the **King Seiko Chronometer Special (52KS)** represented Daini Seikosha's ultimate automatic achievement. Sourced under reference **5245-6000**, this ultra-rare ""Special Chronometer"" model sat at the very pinnacle of the King Seiko hierarchy, officially certified to strict internal chronometer standards to challenge world-class Swiss luxury timepieces.

The Legendary High-Beat 25-Jewel Caliber 5245 Heart: Powering this historic instrument is the revered **25-jewel Caliber 5245A**, an in-house automatic engine operating at a swift high-beat frequency of **28,800 vibrations per hour (8 beats per second)**. Highly celebrated by vintage purists for its micro-engineering excellence, this **25-jewel caliber** features **hacking seconds**, smooth manual-winding capability, and a rare **instantaneous date change mechanism** that snaps crisply at midnight.

Architectural ""6000"" Angular Case and Monocoque Geometry: The reference **5245-6000** is globally distinguished among serious collectors for its sharp, monocoque (one-piece) case architecture designed according to Taro Tanaka's foundational **""Grammar of Design""** principles. The solid stainless steel case features flat, razor-sharp facets and sweeping, broad-shouldered lugs finished with zero-distortion mirror polishing, allowing the watch to sit completely flat and flush against the wrist.

Immaculate Date-Only Dial Balance and Clinical Clarity: The dial of the **5245-6000** is a masterclass in clinical mid-century visual balance, showcasing a radiant canvas free from day-window clutter. It features **hand-applied, multifaceted rectangular hour indices** paired with razor-sharp hands that catch light with high contrast. Symmetrically framed at 3 o'clock, the quick-set date window provides instant legibility, proudly signed with the applied **""KS"" logo**, **""SPECIAL""** script, and the official **""CHRONOMETER""** designation above 6 o'clock.

The Sovereign Gold KS Medallion or Engraved Back Heritage: The ultimate hallmark of this 1973 treasure sits proudly on the case back: the iconic **solid gold-embossed King Seiko medallion** (or deeply engraved Special Chronometer backplate). This emblem historically certified its elite factory-regulated chronometer accuracy and top-tier manufacturing status. Built to an uncompromising heirloom standard, the 5245-6000 Chronometer Special stands as an eternal, investment-grade cornerstone reference for collectors worldwide.

For more information, please look at the pictures.

Notes

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