Description
Grand Seiko 9587-7010 / SBGS007 Quartz
The Seiko 9587, launched in 1988, powered early Grand Seiko quartz models with thermistor-based temperature compensation. It offered high accuracy and quiet refinement before the 9F series took over in the mid-1990s. Used in SBGS references (003, 004, 005, 007), it ran through 1992 in steel, gold, and platinum cases. Collectors value it for its precision and transitional role in Seiko’s HAQ evolution.
Date: September 1993
Movement: Seiko 9587a quartz
Brand: Grand Seiko 9587-7010 / SBGS007
Accuracy: ±0.12 sec/day
Condition:
Dial – Ivory sunburst finish, mint condition
Hands – Mint
Crystal – Seiko original, mint
Case – Very good with faint hairlines
Bracelet – Original Grand Seiko stainless-steel, good condition. Fits wrist until 185/190mm / 7.48in
Service:
Movement stripped, cleaned, and fully serviced for lasting reliability Battery and rubber gaskets replaced All functions tested and confirmed working
Comes with full service report