Vintage 1974 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7192 25Jewels Automatic.

Vintage 1974 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7192 25Jewels 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 : 420173.
• Dial number : JAPAN 5606-7670S.
• Glass : Crystal.
• Case size : About 37.2mm.
• Lug width : 18mm.
• Band : Wrist size that can be worn is Up to about 185mm.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  Set the day of the week can be 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.
• For practical, everyday use, it would be advisable to have the movement cleaned and oiled.

Key Features

The Era of Refined 1970s Corporate Luxury (1974): In **1974**, the **Seiko Lord Matic (LM)** stood as a premier status symbol for Japan's high-ranking corporate executives and modern professionals. The reference **5606-7192** was produced by the **Suwa Seikosha** factory during a landmark era when mechanical watchmaking reached its ultimate maturity to maintain its prestige alongside early quartz technology. It offered the ambitious Showa-era executive a perfect blend of advanced, low-profile mechanical precision and the clinical, sharp-edged styling required for leadership.

The Upgraded 25-Jewel Caliber 5606 Heart: This watch is powered by the **25-jewel Caliber 5606**, an ultra-slim high-grade automatic movement operating at **21,600 vibrations per hour (vph)**. In **1974**, while the standard Lord Matic models utilized 23 jewels, this elite **25-jewel specification** was a clear hallmark of mechanical luxury, utilizing extra synthetic rubies to virtually eliminate friction within the gear train and dual-calendar works. It features premium functions such as **hacking seconds**, manual winding capability, and an integrated day-date quick-set for absolute daily reliability.

Architectural ""7192"" Grammar of Design Case: The reference **5606-7192** is a brilliant and faithful execution of the legendary **Seiko ""Grammar of Design""** philosophy. The stainless steel case features incredibly sharp, angular facets and robust lugs finished with specialized polishing to create a beautiful play of light and shadow. With its low center of gravity, this specific geometry maximized wrist presence while maintaining a remarkably low-profile silhouette that sat perfectly flush and comfortably under a tailored dress shirt cuff.

Masterful ""Weekdater"" Dial Harmony: The dial of the **5606-7192** is a study in clinical mid-century luxury, featuring a radiant sunburst silver finish and **hand-applied, multi-faceted baton indices**. The dual-calendar window at 3 o'clock houses a **bilingual (English/Kanji) day disk**, prioritizing instant professional legibility for the internationalizing Japanese workforce. The applied **""LM"" logo** and the Suwa lightning bolt symbol at 6 o'clock remain prestigious hallmarks of an era that valued bold industrial pride and meticulous attention to detail.

A Landmark of Suwa's High-Spec Mechanical Legacy: Produced in **1974**, the 5606-7192 25-jewel variant remains a highly respected reference for vintage collectors who value the **""Mechanical Golden Age.""** It represents the perfect historical intersection where rugged daily durability met the absolute peak of mid-century minimalist architectural design and high-jewel micro-engineering. It stands as a profound testament to an era when Suwa Seikosha perfected the **""Deluxe Executive Daily Watch,""** creating a reliable and visually striking masterpiece that transcends passing horological trends.

For more information, please look at the pictures.

Notes

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