Serviced Vintage 1973 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7260 23J Automatic.

Serviced Vintage 1973 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7260 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 : 353067.
• Dial number : JAPAN 5606-7610T.
• Glass : Crystal.
• Case size : About 36mm.
• 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 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.
• Overhaul service in July 2026.
  The movement has been cleaned and oiled, so it works fine.

Key Features

The Zenith of 1970s Glamorous Pop-Luxury (1973): In **1973**, during the mature golden age of mechanical watchmaking facing the early quartz revolution, the **Seiko Lord Matic (LM)** stood as a definitive symbol of youthful executive success. Sourced from the **Suwa Seikosha** factory under reference **5606-7260**, this spectacular variant captured the exciting avant-garde and psychedelic styling shifts of the early 1970s. Designed for forward-thinking professionals who demanded expressive wrist presence, it departed from plain corporate dress codes to celebrate rich textures and geometric dimensionality.

The Proven 23-Jewel Caliber 5606 Automatic Engine: This iconic watch is powered by the magnificent **23-jewel Caliber 5606**, an ultra-slim automatic workhorse movement operating at a stable 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 expressive 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 ""7260"" Faceted Prism and Cushion Geometry: The reference **5606-7260** is universally celebrated among vintage purists for its dramatic, light-catching presentation. The solid stainless steel case features a robust, broad-shouldered cushion profile that brilliantly houses a stunning **multi-faceted factory glass crystal (often featuring a 9-cut prism profile)**. This low center-of-gravity case architecture allows the watch to sit perfectly flush against the wrist while creating an unforgettable, kaleidoscopic interplay of light and shadow under a tailored dress sleeve.

Masterful Graded Dial Sensation and Weekdater Utility: One of the most defining characteristics of the reference **5606-7260** is its breathtaking **vibrant color-gradation dial (such as radiant sunburst green, emerald, or deep peacock blue)**, which was highly fashionable in early-1970s luxury consumer goods. The framed dual-calendar window at 3 o'clock houses a **bilingual (English/Kanji) day disk** for split-second professional legibility, beautifully balanced by the hand-applied multifaceted block indices and the interlocking applied **""LM"" emblem** at 6 o'clock.

A Sought-After Cornerstone of Suwa's Mechanical Sunset: Manufactured in the milestone year of **1973**, the 5606-7260 variant remains a highly coveted reference for serious collectors who value the uncompromised creativity of the early 1970s. It represents the perfect historical intersection where rugged daily durability met bold space-age graphic styling and elite, 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 high-utility lifestyle luxury instrument.

For more information, please look at the pictures.

Notes

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