Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
Power Reserve Indicator
Tourbillon
Hands
Central Hour Hand
Central Minute Hand
Open Heart at 6:00
Brand
Audemars Piguet
Winding
Hand winding
Regulators
Screwed Balance
Production Periods
Frequency
21,600 A/h
Anti-Shock
Jewels
25
Balance Mount
Balance Bridge
Back-Side Features
3/4 Plate
-Barrel at 12:00
-Tourbillon at 6:00
AP 2924
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