Vintage 1999 JAPAN GRAND SEIKO 8J56-8020 7Jewels Quartz.

Vintage 1999 JAPAN GRAND SEIKO 8J56-8020 7Jewels Quartz.

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

Item description

Movement :

• Pet name : GRAND SEIKO.
• Caliber number : 8J56A
• Movement : Quartz.
• Year of manufacture start : 1997's.
  Externals :
  • Serial number : 9N0193.
  • Dial number : JAPAN 8J56-8030 R 4.
  • Glass : Crystal.
  • Case size : About 38.9mm.
  • Lug width : 19mm.
  • Band : Wrist size that can be worn is up to about 190mm.
  Condition :
  • Used, it runs well. Battery replaced
  • Quick set(Day/Date) : Okay.
    Set of the date : The set at one stage pulling the crown.
  • Approximate watch rate at Japan : Quartz.
  • For practical, everyday use, it would be advisable to have the movement cleaned and oiled.
  • The anti-reflective coating on the inside (a process to improve visibility) has peeled off in some areas, causing it to appear uneven and slightly cloudy.
  Key Features
  The High-End Caliber 8J56: This watch is powered by the **Caliber 8J56**, a 7-jewel thermo-compensated quartz movement. While the 9F series is more famous today, the 8J series was a flagship GS movement known for its incredible accuracy of **$\pm10$ seconds per year**. It was designed to withstand extreme temperatures and magnetic interference, maintaining peak performance.

  Independent Hour Hand Adjustment: A standout feature of the 8J56 is the **independently adjustable hour hand**. This allows the wearer to change the time zone or adjust for Daylight Savings without stopping the movement or disturbing the precise minute and second hands—a feature highly prized by international travelers.

  Superior Battery Life: The 8J56 movement is celebrated for its efficiency, offering a robust **5-year battery life**. This was significantly longer than many other high-end quartz movements of the era, emphasizing Grand Seiko's commitment to practical, long-term reliability.

  Classic ""Grand Seiko"" Aesthetics: The reference **8J56-8020** embodies the ""Grammar of Design"" with its flawlessly polished **Zaratsu surfaces** and sharp, multi-faceted hands and indices. The screw-down crown and 10-bar water resistance make it a versatile ""all-rounder"" that transitions perfectly from dress to sport.

  Historical Context (1999): Produced in **1999**, this model represents the era of the ""Grand Rebirth"" (which began in 1998). During this time, the 8J caliber was often chosen for models requiring higher water resistance and travel functionality, co-existing with the 9F as a pinnacle of quartz engineering.

For more information, please look at the pictures.

Notes

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