Serviced Vintage 1966 JAPAN 44 KING SEIKO CALENDAR 4402-8000 25J Hand-winding.

Serviced Vintage 1966 JAPAN 44 KING SEIKO CALENDAR 4402-8000 25Jewels Hand-winding.

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

Item description

Movement :

• Pet name : 44 KING SEIKO CALENDAR .
• Caliber number : 4402Ａ.
• Movement : Hand-winding.
• Beat rate : 18000bph.
• Year of manufacture start : 1965's.
• Factory : Kameido.

Externals :

• Serial number : 6005381.
• Dial number : JAPAN 4402-8000R AD.
• Glass : Acrylic.
• Case size : About 35.3mm.
• 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.
• Overhaul service in July 2026.
  The movement has been cleaned and oiled, so it works fine.

Key Features

The Sovereign Benchmark of 1966 Daini Hand-Wound Luxury (1966): Manufactured in **1966**—a defining historical year during Japan's mid-Showa industrial boom—the **44 King Seiko Calendar (44KS)** stood at the apex of Kameido's executive hand-wound watchmaking. Born from the prestigious **Daini Seikosha** factory under reference **4402-8000**, this second-generation King Seiko was engineered specifically as an uncompromising rival to Suwa's Grand Seiko line, capturing the supreme corporate ambition and horological pride of the era.

The Over-Engineered 25-Jewel Caliber 4402 Manual Heart: Powering this historic timepiece is the legendary **25-jewel Caliber 4402A**, a robust in-house manual-wind engine operating at a classic frequency of **18,000 vibrations per hour (vph)**. Celebrated by vintage purists as one of Daini's most durable manual movements, it deploys a lavish **25-jewel specification** to control gear-train friction. It incorporates an advanced **hacking seconds mechanism** (stop-second function) alongside an integrated quick-set date configuration.

Architectural ""8000"" Grammar of Design Case Mastery: The reference **4402-8000** is globally revered among serious collectors as a foundational textbook implementation of Taro Tanaka's **""Grammar of Design""** guidelines. The solid stainless steel case features extraordinarily bold, razor-sharp facets and muscular, flat-surfaced lugs finished with zero-distortion mirror polishing. This geometric architecture allowed the mechanical instrument to sit completely flat and authoritative against the wrist.

Immaculate Calendar Dial Harmony and Crisp Legibility: The dial of the **4402-8000** is a study in clinical mid-century visual balance, showcasing a brilliant silver sunburst canvas. It features **hand-applied, multifaceted rectangular block indices** with a prominent double index at 12 o'clock and razor-sharp dauphine hands that capture light with striking contrast. Framed neatly at 3 o'clock, the quick-set date window provides instant split-second legibility, proudly signed with the applied **""SEIKO""** logo and Daini lightning bolt emblem above 6 o'clock.

The Sovereign Gold Shield Medallion of Kameido's Heritage: The ultimate hallmark of this 1966 treasure sits proudly on the screw-down case back: a **pristine, solid gold-embossed King Seiko shield medallion**. Featuring the iconic cross-hilted sword and crown crest, this emblem historically certified its factory-regulated precision and elite manufacturing standard. Built to an uncompromising heirloom quality, the 4402-8000 stands as an eternal, investment-grade cornerstone reference for collectors worldwide.

For more information, please look at the pictures.

Notes

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