Grail Watch Reference
A Reference Library for Watches from Grail Watch
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About Grail Watch
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Complications
Alarm
GMT Hand
Tourbillon
Hands
24 Hour Window at 3:00
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Mode Indicator at 6:00
Open Heart at 9:00
Brand
A. Schild
Audemars Piguet
Winding
Hand winding
Two Barrel
Regulators
Screwed Balance
Production Periods
1950s
1960s
1970s
Frequency
18,000 A/h
21,600 A/h
Anti-Shock
Jewels
17
29
Balance Mount
Balance Bridge
Back-Side Features
-Barrel at 6:00
AP 2913
AS 1475
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