Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
Date
Day
Month
Year
Hands
Year Window at 11:30
Brand
Tianjin
-Sea-Gull
Winding
Automatic
-Central Rotor Automatic Winding
Regulators
Production Periods
2010s
2020s
Frequency
21,600 A/h
Anti-Shock
Jewels
29
Balance Mount
Back-Side Features
Central Rotor
ST2503
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