Serviced Vintage 1969 JAPAN SEIKO SKYLINER CALENDAR 6102-8000 21J Hand-winding.

Serviced Vintage 1969 JAPAN SEIKO SKYLINER CALENDAR 6102-8000 21Jewels Hand-winding.

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

Item description

Movement :

• Pet name : 61 SKYLINER CALENDAR .
• Caliber number : 6102A.
• Movement : Hand-winding.
• Beat rate : 21600.
• Year of manufacture start : 1968's.
• Factory : Suwa.

Externals :

• Serial number : 910313.
• Dial number : JAPAN 6102-8000U.
• Glass : Acrylic.
• Case size : About 36.89mm.
• Lug width : 18mm.
• Band : New Leather Strap.

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.
• Overhaul service in March 2026.
  The movement has been cleaned and oiled, so it works fine.

Key Features

The Final Evolution of Hand-Wound Dress Watches (1969): By **1969**, as the world shifted toward automatic and quartz movements, the **Seiko Skyliner** series reference **6102-8000** represented the ultimate refinement of the manual-wind business watch. It was designed for the professional who appreciated a slim, reliable timepiece that adhered to the traditional ritual of daily winding, offering a ""modern classic"" aesthetic for the turn of the decade.

The Modernized Caliber 6102: This watch is powered by the **21-jewel Caliber 6102**, a high-quality manual-wind movement operating at **21,600 vibrations per hour (vph)**. Part of the legendary **61-series** family (which also birthed the 61GS), this caliber was a significant upgrade over earlier 62-series Skyliners. It offered improved accuracy and a robust construction that made it one of the most reliable hand-wound movements of **1969**.

The ""8000"" Series Design Language: The reference **6102-8000** features a case architecture that is synonymous with the **Grammar of Design** era. With its sharp, faceted lugs and a mirror-polished bezel, it captures light in a way that emphasizes its slim profile. The case was built by the **Suwa Seikosha** factory to be exceptionally flat, ensuring it sat with sophisticated discretion on the wrist of a corporate executive.

Masterful Dial and Calendar Symmetry: The dial of the **6102-8000** is a study in minimalist perfection. Featuring a crisp sunburst silver finish and meticulously applied baton indices, it prioritizes **unrivaled legibility**. The calendar window at 3 o'clock is framed with high-polish steel, balancing the ""Skyliner"" and ""Calendar"" scripts to create a harmonious and professional dial layout typical of **1969** Japanese design.

A Landmark of Mid-Century Minimalism: Produced during the historic year of the Apollo 11 moon landing and the birth of the Quartz Astron, the **6102-8000** stands as a testament to the enduring beauty of mechanical simplicity. Collectors today prize this model for its **slim, architectural presence** and its status as one of the last great hand-wound ""Skyliner"" models before the series was discontinued.

For more information, please look at the pictures.

Notes

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