Vintage 1964 JAPAN SEIKO SPORTSMAN CALENDAR 889980 17Jewels Hand-winding.

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

Item description

It's a SEIKO Hand-winding Watch, SPORTSMAN CALENDAR 889980 17Jewels .
It's in good used condition.
It's difficult to find this valuable watch in such a good condition. Highly recommended for SEIKO collectors!
Movement :
  • Pet name : SPORTSMAN 17 CALENDAR .
  • Caliber number : 957.
  • Movement : Hand-winding.
  • Beat rate : 18000bph.
  • Year of manufacture start : 1963's.
  • Factory : Suwa.
Externals :
  • Serial number : 4D02865.
  • Dial number : JAPAN 6602-9990S.
  • Glass : Acrylic.
  • Case size : About 36mm.
  • Lug width : 19mm.
  • Band : New Leather Strap.
Condition :
  • Used, it runs well.
  • 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 Spirit of the ""Sportsman"" Series: Launched in the early 1960s, the **Sportsman** was designed as a robust and reliable ""everyday"" watch for the active Japanese public. By **1964**, it had become a beloved staple in Seiko’s catalog, offering a perfect balance between a formal dress watch and a durable timekeeper for the modern lifestyle of the mid-century.
  • The Reliable Caliber 889980 (17 Jewels): This watch is powered by a **17-jewel manual-winding movement**. Known for its simplicity and ease of maintenance, this caliber was the definitive ""workhorse"" of the era. Operating at **18,000 vibrations per hour (vph)**, it was engineered to be thin yet sturdy, providing consistent performance for professionals during Japan's high-growth period.
  • The Milestone Year (1964): Produced in **1964**, the year of the **Tokyo Olympics**, this Sportsman model represents a significant era of national pride for Japan. During this time, Seiko proved its world-class manufacturing capabilities on the international stage, and owning a ""Made in Japan"" watch like the **889980** became a symbol of trust and quality.
  • Classic ""Sportsman"" Aesthetics: The reference **889980** features a timeless design with its sunburst silver dial, elegant **tapered dauphine hands**, and clean applied indices. The ""Calendar"" model includes a date window at the 3 o'clock position, a practical feature that made it the ideal companion for the burgeoning business class.
  • Seikosha ""Sea-Horse"" Legacy: As a model intended for a more active lifestyle, the case back often features the iconic **""Sea-Horse"" (Tatsunootoshigo) logo**. This mark was used to signify the watch's water-protected construction, reflecting Seiko's early commitment to making precision mechanical watches that could withstand the rigors of daily use.
    • For more information, please look at the pictures.
    Notes
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