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
Date
Hands
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Brand
Bulova
IWC
Longines
Omega
Patek Philippe
Rado
Rolex
Winding
Battery
Regulators
Quartz
Production Periods
1970s
Frequency
8,192 Hz
Anti-Shock
Jewels
Balance Mount
Back-Side Features
-Battery at 6:00
Beta 21
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