Vintage 1970 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7140 23Jewels Automatic.

Vintage 1970 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7140 23Jewels Automatic.

Welcome to my auction!

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 No. : 002497.
• Dial No. : JAPAN 5606-7340T.
• Glass : Crystal.
• Case size : About 35.8mm.
• Lug width : 18mm.
• 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 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 Sovereign Peak of 1970 Executive Tonneau Luxury (1970): Manufactured in 1970—a landmark historical year defining the turn of the decade during Japan's peak post-war industrial supremacy—the Seiko Lord Matic Weekdater reference 5606-7140 represented Suwa Seikosha's quintessential business-class flagship. Positioned directly beneath King Seiko, this reference delivered near-chronometer-grade mechanical performance wrapped in the daring, forward-looking tonneau-cushion architecture that ushered in early-1970s Showa corporate styling.
• The Over-Engineered 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). Highly respected by vintage purists for its remarkably ultra-thin profile and long-term daily stability, this movement deploys a 23-jewel specification to minimize gear-train friction, complete with hacking seconds, quick-set dual calendar control, and smooth manual-winding capability.
• Architectural ""7140"" Tonneau Case Grammar of Design: The reference 5606-7140 is globally recognized among vintage collectors for its flowing, sculpted tonneau-cushion case profile executing Taro Tanaka's ""Grammar of Design"" principles. Crafted in solid stainless steel, the case features sweeping brushed upper surfaces with contrasting mirror-polished Zaratsu chamfers along the outer flanks, allowing the low-profile case to sit with commanding wrist presence while sliding effortlessly under a formal shirt cuff.
• Masterful ""Weekdater"" Dial Harmony and Bilingual Utility: The dial of the 5606-7140 showcases exemplary early-1970s layout symmetry, featuring a radiant finish framed by an elevated chapter ring and accented with hand-applied, multifaceted rectangular block indices and matching sharp hands. Symmetrically framed at 3 o'clock, the dual-calendar window houses a bilingual (English/Kanji) day disk alongside a quick-set date wheel, proudly offset by the applied metal ""LM"" emblem and the Suwa Seikosha swirl insignia above 6 o'clock.
• An Investment-Grade Masterpiece of Suwa's Automatic Heritage: Produced during the milestone mechanical year of 1970, the 5606-7140 23-jewel Lord Matic Weekdater stands as an exceptionally collectible reference for serious vintage Seiko connoisseurs worldwide. Capturing the precise era where Suwa Seikosha boldly merged ultra-thin automatic watchmaking with sculpted 1970s case geometry, it remains an eternal treasure of Japanese horological history.

For more information, please look at the pictures.

Notes

• Before buying.
  The vintage watches we sell are inspected and adjusted so they work fine. However, since it is an vintage watch, Please purchase on the assumption that it will be repaired.
  
  
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