Grail Watch Reference
A Reference Library for Watches from Grail Watch
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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 7:30
-Barrel at 1:30
Blancpain R-550
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