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
Hands
Central Hour Hand
Central Minute Hand
Brand
Blancpain
Frédéric Piguet
Winding
Hand winding
Regulators
Production Periods
1920s
1930s
1940s
1950s
1960s
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
21,600 A/h
Anti-Shock
Jewels
18
Balance Mount
Balance Cock
-Balance Cock Counter-Clockwise
Back-Side Features
FP 21
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