Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Grail Watch Blog
The Watch Files Podcast
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
Winding
Hand winding
Regulators
Screwed Balance
Production Periods
1950s
1960s
1970s
Frequency
21,600 A/h
Anti-Shock
Jewels
17
Balance Mount
Balance Cock
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 7:00
Blancpain R-550
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