Vintage 1970 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7150 23Jewels Automatic.

Vintage 1970 JAPAN SEIKO LORD MATIC WEEKDATER 5606-7150 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. : 099603.
• Dial No. : JAPAN 5606-7380R.
• Glass : Crystal.
• Case size : About 36.5mm.
• 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.
• For practical, everyday use, it would be advisable to have the movement cleaned and oiled.

Key Features

• The Sovereign Peak of 1970 Executive Cushion Luxury (1970): Manufactured in 1970—a pivotal turning point defining the turn of the decade during Japan's peak post-war industrial supremacy—the Seiko Lord Matic Weekdater reference 5606-7150 represented Suwa Seikosha's quintessential business-class flagship. Positioned directly beneath King Seiko, this model offered corporate professionals chronometer-adjacent mechanical precision paired with the emerging, forward-thinking 1970s cushion-case 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 slim 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 ""7150"" Tonneau-Cushion Case Geometry: The reference 5606-7150 is globally recognized among collectors for its distinctive, flowing tonneau/cushion-style stainless steel architecture influenced by Taro Tanaka's ""Grammar of Design"" principles. Featuring sweeping curved case flanks with contrasting brushed surfaces and zero-distortion Zaratsu mirror-polished outer bevels, the case rests completely flat against the wrist while providing a bold, comfortable presence.
• Masterful ""Weekdater"" Dial Harmony and Bilingual Utility: The dial of the 5606-7150 showcases exemplary early-1970s layout symmetry, featuring a radiant finish accented by hand-applied, multifaceted rectangular block indices and sharp baton hands. Symmetrically framed at 3 o'clock, the dual-calendar window houses a bilingual (English/Kanji) day disk alongside a quick-set date wheel, offset by the applied polished ""LM"" emblem and the Suwa Seikosha vortex insignia above 6 o'clock.
• An Investment-Grade Masterpiece of Suwa's Automatic Heritage: Manufactured in the milestone mechanical year of 1970, the 5606-7150 23-jewel Lord Matic Weekdater remains an exceptionally clean, highly collectible cornerstone reference for serious vintage Seiko enthusiasts worldwide. Capturing the exact transition where Suwa Seikosha merged classic late-60s ultra-thin automatic watchmaking with iconic 1970s case geometry, it stands as an enduring heirloom 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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