Vintage 1972 JAPAN SEIKO Automatic CALENDAR 7005-7001 17Jewels Automatic.

Vintage 1972 JAPAN SEIKO Automatic CALENDAR 7005-7001 17Jewels Automatic.

Welcome to my auction!

Item description

Movement :

• Pet name : SEIKO Automatic CALENDAR .
• Caliber number : 7005A.
• Movement : Automatic.
• Beat rate : 21600bph.
• Year of manufacture start : 1970's.
• Factory : Kameido.

Externals :

• Serial No. : 250462.
• Dial No. : JAPAN 7005-7001R.
• Glass : Acrylic.
• Case size : About 35.3mm.
• Lug width : 18mm.
• Band : New leather strap of SEIKO original.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  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 1970s Minimalist Executive Utility (1972): Manufactured in 1972—a landmark historical year during Japan's peak industrial expansion and mature mechanical watchmaking era—the Automatic Calendar reference 7005-7001 represented Daini Seikosha's quintessential daily dress watch. Positioned as an elegant, ultra-dependable timepiece for corporate professionals, this reference stripped away excess ornamentation to deliver pure Showa-era chronometric minimalism.
• The Robust 17-Jewel Caliber 7005 Automatic Heart: Powering this historic instrument is the revered in-house 17-jewel Caliber 7005 (7005A), an automatic engine operating at a steady frequency of 21,600 vibrations per hour (vph). Designed exclusively as a dedicated self-winding movement, it features Seiko's proprietary Magic Lever bi-directional winding mechanism, Diashock anti-shock protection, an independent quick-set date calendar system, and an efficient 17-jewel train engineered for decades of low-maintenance operation.
• Architectural ""7001"" Grammar of Design Case Geometry: Executed in a solid stainless steel case, the reference 7005-7001 showcases clean, disciplined lines inspired by Taro Tanaka's ""Grammar of Design"" ethos. Combining broad, gently tapering lugs with flat polished bezel planes and distortion-free mirror-polished Zaratsu chamfers along the flanks, the slim-profile case sits completely flat against the wrist and slips effortlessly under a formal shirt cuff.
• Masterful Sunburst Dial Harmony and Date Window Utility: The dial of the 7005-7001 displays pristine early-1970s layout balance, featuring a radiant silver sunburst canvas framed by a discrete outer minute track. It is adorned with hand-applied, multifaceted rectangular block indices with dark central accents, razor-sharp baton hands, a framed quick-set date aperture at 3 o'clock, the applied polished ""SEIKO"" logo, and the iconic Daini Seikosha lightning bolt insignia above 6 o'clock.
• An Enduring Cornerstone of Daini's Workhorse Heritage: Produced during the milestone mechanical year of 1972, the 7005-7001 17-jewel Automatic Calendar remains an accessible, highly respected cornerstone reference for serious vintage enthusiasts worldwide. Serving as the direct mechanical ancestor to the renowned 7S26 movement family, it captures the exact moment where Daini Seikosha perfected streamlined automatic engineering within a timeless dress aesthetic.

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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