Serviced Vintage 1968 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7050 23J Automatic.

Serviced Vintage 1968 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7050 23Jewels Automatic.

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

Item description

Movement :

• Pet name : 56 LORD MATIC WEEKDATER .
• Caliber number : 5606A.
• Movement : Automatic.
• Beat rate : 21600bph.
• Year of manufacture start : 1968's.
• Factory : Suwa.

Externals :

• Serial number : 850163.
• Dial number : JAPAN 5606-7111T AD.
• Glass : Acrylic.
• Case size : About 35mm.
• Lug width : 19mm.
• Band : New Leather Strap of SEIKO original.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  Day of the week can be set in English or Kanji.
  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 April 2026.
  The movement has been cleaned and oiled, so it works fine.

Key Features

The Inception of the Lord Matic Era (1968): In **1968**, the **Seiko Lord Matic (LM)** was launched as a revolution in slim-profile automatic timekeeping. The reference **5606-7050** was produced by the **Suwa Seikosha** factory during its debut year. It arrived as a high-end successor to the Lord Marvel, intended to provide the Japanese ""salaryman"" with an elegant, modern, and high-performance watch that could compete with the world's most sophisticated Swiss exports.

The Revolutionary 23-Jewel Caliber 5606: This watch is powered by the **23-jewel Caliber 5606**, an automatic movement operating at **21,600 vibrations per hour (vph)**. In **1968**, the 56-series was a breakthrough in engineering, utilizing a compact and efficient architecture that allowed the watch to be remarkably thin. This movement introduced high-end features like **hacking seconds**, manual winding, and a quick-set day-date mechanism to the mid-high range luxury market.

Purity of the ""7050"" First-Generation Case: The reference **5606-7050** is a definitive example of the **early Lord Matic aesthetic**. The case features the sharp, mirror-polished lugs and clean lines that define the ""Grammar of Design."" In **1968**, this architectural rigor was intended to reflect the ""sparkling"" success of the modern professional, offering a clinical and prestigious look that sat perfectly flush against a shirt cuff.

Masterful ""Weekdater"" Dial Symmetery: The dial of the **5606-7050** is celebrated for its perfect balance, featuring a radiant sunburst silver finish and **hand-applied, multifaceted baton indices**. The dual-calendar window at 3 o'clock houses a **bilingual (English/Kanji) day disk**, an essential innovation in **1968** for the globalizing Japanese executive. The presence of the ""LM"" applied logo and the Suwa factory symbol remain hallmarks of this era’s high-status branding.

A Landmark of Suwa Mechanical Evolution: Produced in **1968**, the 5606-7050 remains a highly prized piece for collectors as a **""Year One"" example** of the Lord Matic lineage. It represents the successful bridge between the classic mechanical tradition and the modern, high-precision engineering that would eventually lead to the King Seiko 56KS. It stands as a testament to an era when Seiko redefined the expectations of the business class watch for a generation.

For more information, please look at the pictures.

Notes

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