Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Grail Watch Blog
Reference Documents
1979 Citizen Movement Table
Seiko Blue Book Automatic Movement Chronology
Seiko Laurel Brochure
Seiko List of Basic and Derivative Calibres
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Complications
Date
-Quick Date Correction
Day
-Quick Day Correction
Hacking Seconds
Leap Year
Month
-Quick Month Correction
Moon Phase
Year
Hands
Year Wheel at 9:00
Brand
ETA
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Regulators
Production Periods
1990s
2000s
Frequency
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
21
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 12:00
ETA 2890-9
ETA 2891-9
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