Vintage 1969 JAPAN SEIKO SKYLINER 6100-8000 21Jewels Hand-winding.

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

Item description

It's a SEIKO Hand-winding Watch, SKYLINER 6100-8000 21Jewels .
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 : 61 SKYLINER .
  • Caliber number : 61A.
  • Movement : Hand-winding.
  • Beat rate : 21600bph.
  • Year of manufacture start : 1968's.
  • Factory : Suwa.
Externals :
  • Serial number : 9102037.
  • Dial number : JAPAN 6100-8010U.
  • Glass : Acrylic.
  • Case size : About 36.86mm.
  • Lug width : 18mm.
  • 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 Pure Expression of Minimalist Elegance (1969): In **1969**, the **Seiko Skyliner** stood as the definitive choice for the purist who prioritized classic mechanical elegance. The reference **6100-8000** was produced by the **Suwa Seikosha** factory during a landmark year in horological history. While the world was shifting toward quartz and automatic movements, this model remained committed to the manual-wind tradition, offering a clinical, ""time-only"" purity that embodied the disciplined lifestyle and refined taste of the late-1960s Japanese elite.
  • The Reliable 21-Jewel Caliber 6100 Heart: This watch is powered by the **21-jewel Caliber 6100**, a high-precision manual-wind movement operating at **21,600 vibrations per hour (vph)**. In **1969**, a **21-jewel count** for a ""no-date"" movement was a hallmark of mechanical status, ensuring virtually zero friction in the gear train for exceptional longevity. This caliber is celebrated for its tactile winding ritual and its slim architecture, providing a level of reliability that has allowed many examples to maintain clinical precision for over half a century.
  • Architectural ""8000"" Grammar of Design Case: The reference **6100-8000** is a masterclass in the **""Seiko Style""** of the late 60s. The stainless steel case features sharp, angular lugs and mirror-polished flat surfaces that create a brilliant play of light and shadow. By omitting both the automatic rotor and the calendar mechanism, Seiko achieved an **ultra-thin silhouette** that remains one of the most ergonomic designs of the era. In **1969**, this streamlined profile ensured the watch maintained a dignified, low-profile presence under a bespoke dress shirt cuff.
  • Masterful ""Skyliner"" Dial Symmetry: The dial of the **6100-8000** is a study in clinical luxury, featuring a radiant sunburst silver finish and **hand-applied, multifaceted baton indices**. The absence of a date window ensures **perfect visual symmetry**, highlighting the uncompromising legibility of the sharp Dauphine hands. The elegant **""Skyliner"" script** and the Suwa factory symbol remain prestigious hallmarks of an era that valued professional clarity and the peak of Japanese industrial craftsmanship.
  • A Landmark of Suwa's Manual-Wind Heritage: Produced in **1969**, the 6100-8000 remains a highly respected reference for collectors who value the **""Mechanical Slim"" legacy**. It represents the perfect intersection of **proven engineering and the minimalist architectural movement** of the late 1960s. It stands as a testament to an era when Suwa Seikosha perfected the **""high-utility dress watch,""** creating a reliable and visually striking masterpiece that remains as stylish today as it was over fifty years ago.
    • For more information, please look at the pictures.
    Notes
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