Serviced Vintage 1968 JAPAN SEIKO LORD MATIC WEEKDATER 5606-9000 23J Automatic.

Serviced Vintage 1968 JAPAN SEIKO LORD MATIC WEEKDATER 5606-9000 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 : 808049.
• Dial number : JAPAN 5606-9011S AD.
• Glass : Acrylic.
• Case size : About 37.3mm.
• Lug width : 18mm.
• Band : Wrist size that can be worn is Up to about 195mm.

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.
• Overhaul service in July 2026.
  The movement has been cleaned and oiled, so it works fine.

Key Features

The Vanguard of 1968 Space-Age Corporate Luxury (1968): In **1968**, a monumental vintage year marked by bold cultural shifts and peak mechanical maturation, the **Seiko Lord Matic (LM)** series introduced a new era of wrist prestige. Born from the **Suwa Seikosha** factory under reference **5606-9000**, this highly expressive variant captured the exciting, future-oriented design optimism of the late Showa economic miracle. Explicitly drawn for ambitious professionals who demanded a distinctive identity, it successfully departed from plain corporate aesthetics to deliver an iconic, sculptural masterpiece.

The Sovereign 23-Jewel Caliber 5606 Automatic Engine: This historic watch is powered by the magnificent **23-jewel Caliber 5606**, an ultra-slim automatic workhorse movement operating at a stable daily frequency of **21,600 vibrations per hour (vph)**. Highly regarded by vintage purists for its innovative, low-profile mainplate architecture, this movement allowed Seiko to construct exceptionally sleek cases without sacrificing structural stability. The classic **23-jewel specification** deploys premium synthetic rubies across vital gear-train pivots, integrating a **seconds-hacking mechanism** and manual-winding capability.

Architectural ""9000"" Sculptural Case Mastery and Presence: The reference **5606-9000** is globally celebrated among serious collectors for its dramatic, light-catching geometric presence. The solid stainless steel case showcases an extraordinarily sharp profile with muscular, multi-angled integrated facets and a pristine bezel that controls light with beautiful vintage warmth. This bold, low center-of-gravity case architecture allows the mechanical structure to sit entirely flush against the skin, sliding completely weightless and effortlessly under a tailored executive shirt cuff.

Masterful ""Weekdater"" Dial Layout with Bilingual Harmony: The dial of the **5606-9000** is a study in clinical mid-century luxury, showcasing a radiant silver sunburst canvas decorated with **hand-applied, multifaceted chunky block indices**. The dual-calendar window at 3 o'clock houses a **bilingual (English/Kanji) day disk**, prioritizing instant split-second legibility for the globalizing Japanese workforce. The applied, interlocking **""LM"" emblem** and the Suwa lightning bolt insignia at 6 o'clock remain proud hallmarks of pure manufacturing pride.

An Investment-Grade Masterpiece of Suwa's Mechanical Legacy: Manufactured in the milestone mechanical year of **1968**, the 5606-9000 variant remains a highly coveted cornerstone reference for serious vintage Seiko enthusiasts worldwide. It represents the perfect historical intersection where rugged daily durability met late-1960s expressive case finishing and high-utility lifestyle micro-engineering right before the full quartz transition. Built to an uncompromising heirloom standard, it stands as a profound testament to an era when Japan perfected the luxury automatic daily instrument.

For more information, please look at the pictures.

Notes

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