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
About Grail Watch
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Complications
24 Hour Hand
Equation of Time
GMT Hand
-Independently-Adjustable 24 Hour Hand
Leap Year
Moon Phase
Perpetual Calendar
Hands
Brand
Arnold & Son
Winding
Regulators
Production Periods
Frequency
Anti-Shock
Jewels
Balance Mount
Back-Side Features
AGH-1764
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