Vintage 1966 JAPAN SEIKO SPORTSMATIC CALENDAR DELUXE 7605-8010 23Jewels Automati

Vintage 1966 JAPAN SEIKO SPORTSMATIC CALENDAR DELUXE 7605-8010 23Jewels Automatic.

Welcome to my auction!
I am Japanese who live in Tokyo.

Item description

Movement :

• Pet name : SPORTSMATIC CALENDAR DELUXE.
• Caliber number : 7605A.
• Movement : Automatic.
• Beat rate : 18000bph.
• Year of manufacture start : 1966's.
• Factory : Kameido.

Externals :

• Serial No. : 6020867.
• Dial No. : JAPAN 7605-8020R AD.
• Glass : Acrylic.
• Case size : About 36.45mm.
• Lug width : 19mm.
• Band : New Leather Strap.

Condition :

• Used, it runs well.
• Quick set(Day/Date) : Okay.
  Set of the date: Press 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 Mid-60s Executive Calendar Luxury (1966): Manufactured in 1966—a defining historical year during Japan's peak post-war industrial supremacy—the Seiko Sportsmatic Calendar Deluxe reference 7605-8010 represented Suwa Seikosha's elevated date-only flagship within the Sportsmatic lineage. Positioned as a refined, executive-tier alternative to dual-calendar models, the ""Deluxe"" designation brought upgraded jewel counts, high-grade dial finishing, and push-button calendar convenience to discerning professionals.
• The Over-Engineered 23-Jewel Caliber 7605 Automatic Engine: Powering this historic instrument is the elevated 23-jewel Caliber 7605A, an in-house automatic workhorse operating at a steady frequency of 18,000 vibrations per hour (vph). Featuring a lavish 23-jewel specification to minimize gear-train friction across critical movement pivots, it includes Seiko's Diashock anti-shock protection, hacking seconds (stop-seconds mechanism), and a dedicated push-button quick-set date mechanism.
• Distinctive Quick-Set Date Pusher and Recessed Crown Architecture: Engineered for exceptional ergonomic utility, the reference 7605-8010 features a signature dual-control setup: a primary recessed crown hidden at 4 o'clock for time-setting paired with a dedicated quick-set date pusher mounted at 2 o'clock. This dual-button case geometry allows rapid date changes with a single press without interrupting timekeeping accuracy.
• Architectural ""8010"" Grammar of Design Case Geometry: Executed in a solid stainless steel case, the reference 8010 features bold, sweeping faceted lugs inspired by early ""Grammar of Design"" principles. The radiant silver sunburst dial showcases mid-60s visual layout harmony, decorated with hand-applied multifaceted hour markers, sharp dauphine hands, a framed date window at 3 o'clock, and applied metal ""5"" shield and ""DELUXE"" typography above 6 o'clock.
• The Sovereign Dolphin Case Back Medallion Heritage: The ultimate hallmark of this 1966 vintage treasure sits stamped on the case back: the iconic Seiko Dolphin crest (or deeply etched waterproof dolphin medallion). Certifying its top-tier factory regulation, water-resistant construction, and athletic durability, the 7605-8010 Sportsmatic Calendar Deluxe remains an indispensable, highly collectible cornerstone reference representing the golden dawn of Japanese sports-executive horology.

For more information, please look at the pictures.

Notes

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