Vintage 1971 JAPAN SEIKO LORD MATIC WEEKDATER 5606-5000 23Jewels Automatic.

Vintage 1971 JAPAN SEIKO LORD MATIC WEEKDATER 5606-5000 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 : 112024.
• Dial number : JAPAN 5606-5080T.
• Glass : Acrylic.
• Case size : About 31.7mm.
• Lug width : 20mm.
• Band : Wrist size that can be worn is Up to about 192mm.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  Set the day of the week can be in English or Japanese.
  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 Benchmark of 1971 TV-Screen Executive Luxury (1971): Manufactured in **1971**—a milestone year during Japan's peak post-war industrial era and mechanical golden age—the **Seiko Lord Matic Weekdater** stood as the benchmark of accessible executive prestige. Sourced under reference **5606-5000**, this Suwa Seikosha flagship offered near-chronometer-grade automatic movement performance encased in a bold, distinctive square-cushion ""TV screen"" case architecture.

The High-Performance 23-Jewel Caliber 5606 Automatic Heart: Powering this historic instrument is the revered **23-jewel Caliber 5606**, an in-house automatic engine operating at a smooth frequency of **21,600 vibrations per hour (vph)**. Celebrated by vintage purists for its remarkably ultra-slim movement profile and long-term daily stability, this movement features **hacking seconds**, quick-set dual calendar functionality, and smooth manual-winding capability.

Architectural ""5000"" Square TV-Screen Case Geometry: The reference **5606-5000** is globally recognized among vintage collectors for its iconic 1970s TV-screen/square case silhouette. Executed in solid stainless steel, the case features broad polished surfaces, strong geometric angles, and clean facet lines following Taro Tanaka's **""Grammar of Design""** philosophy, allowing the watch to rest flat and commanding on the wrist.

Masterful Dual-Calendar Dial Harmony and Visual Symmetry: The dial of the **5606-5000** is a study in early-1970s geometry, showcasing a radiant silver or textured canvas framed perfectly by the rectangular crystal window. It features **hand-applied, multifaceted hour indices** and sharp hands, paired with a **bilingual (English/Kanji) day disk** and date window framed symmetrically at 3 o'clock for split-second legibility.

An Investment-Grade Masterpiece of Suwa's Automatic Heritage: Manufactured in the milestone mechanical year of **1971**, the 5606-5000 23-jewel Lord Matic Weekdater remains a highly sought-after, universally respected cornerstone reference for serious vintage Seiko collectors. It captures the exact historical era where Suwa Seikosha perfected high-utility, stylish automatic daily instruments right before the global industry shifted toward digital quartz technology.

For more information, please look at the pictures.

Notes

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