Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
Hacking Seconds
Tourbillon
-Flying Tourbillon
Hands
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Open Heart at 6:00
Brand
Bulgari
Zenith
Winding
Automatic
-Central Rotor Automatic Winding
-Peripheral Automatic Winding
Two Barrel
Regulators
Microstella
Production Periods
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Jewels
24
35
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
Back-Side Features
-Balance at 4:30
-Barrel at 1:30
-Barrel at 10:30
-Barrel at 12:00
Central Rotor
-Tourbillon at 6:00
BVL 288
Zenith 6150
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