Vintage 1971 JAPAN SEIKO LORD MATIC SPECIAL WEEKDATER 5206-5020 25J Automatic.

Vintage 1971 JAPAN SEIKO LORD MATIC SPECIAL WEEKDATER 5206-5020 25Jewels Automatic.

Welcome to my auction!

Item description

Movement :

• Pet name : 52 LORD MATIC SPECIAL WEEKDATER.
• Caliber number : 5206A.
• Movement : Automatic.
• Beat rate : 28800bph.
• Year of manufacture start : 1970's.
• Factory : Kameido.

Externals :

• Serial No. : 190468.
• Dial No. : JAPAN 5206-5020S.
• Glass : Acrylic.
• Case size : About 36.6mm.
• Lug width : 20mm.
• Band : Wrist size that can be worn is Up to about 198mm.

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 Dawn of High-Beat Lord Matic Special Luxury (1971): Manufactured in 1971—a landmark historical year during Japan's mature post-war economic boom and peak mechanical watchmaking era—the Seiko Lord Matic Special Weekdater reference 5206-5020 represented Daini Seikosha's elevated, high-beat evolution of the Lord Matic series. Bearing the elite ""Special"" designation, this flagship reference was engineered to offer King Seiko-adjacent chronometric performance and movement refinement wrapped in bold, avant-garde Showa executive styling.
• The Legendary High-Beat 25-Jewel Caliber 5206 Automatic Heart: Powering this rare mechanical instrument is the celebrated 25-jewel Caliber 5206, an advanced in-house high-beat movement operating at 28,800 vibrations per hour (8 beats per second). Revered by vintage purists as one of the finest automatic calibers ever crafted by Daini (and the direct mechanical ancestor to modern Grand Seiko 4S movements), it features instantaneous day/date midnight changeover, quick-set dual calendar control, hacking seconds, manual-winding capability, and a lavish 25-jewel specification to minimize friction across its high-frequency gear train.
• Architectural ""5020"" TV/Square Case Geometry: The reference 5206-5020 is globally celebrated among vintage Seiko collectors for its distinctive, modernist square/TV-dial case profile executed under Taro Tanaka's ""Grammar of Design"" principles. Crafted in solid stainless steel, the case combines broad brushed surfaces with razor-sharp mirror-polished Zaratsu chamfers, allowing the low-profile case to sit with commanding wrist presence while sliding effortlessly under a formal shirt cuff.
• Masterful ""Special"" Dial Harmony and Bilingual Utility: The dial of the 5206-5020 showcases exemplary early-1970s layout symmetry, featuring a radiant finish accented by hand-applied, faceted block indices and sharp baton hands. Symmetrically framed at 3 o'clock, the dual-calendar aperture houses a bilingual (English/Kanji) day disk alongside a quick-set date wheel, proudly offset by the applied metal ""LM"" emblem, stylized ""Special"" script, and the iconic Daini Seikosha lightning bolt symbol above 6 o'clock.
• An Investment-Grade Masterpiece of Daini's High-Beat Heritage: Produced during the inaugural release era of the 5206 caliber in 1971, the 5206-5020 25-jewel Lord Matic Special Weekdater stands as an exceptionally desirable, highly collectible cornerstone reference for serious vintage Seiko enthusiasts worldwide. Merging Daini Seikosha's peak high-beat caliber technology with iconic early-70s geometric case architecture, it remains an eternal treasure of Japanese horological history.

For more information, please look at the pictures.

Notes

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