Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
-Outer Day Wheel
Hands
Central 24 Hour Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Day Window at 12:00
Brand
ETA
Miyota
Rolex
Sellita
Soprod
STP
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Counter-Clockwise Automatic Winding
Hand winding
Regulators
Chronergy
ETACHRON
Microstella
Screw Regulator
Soprod
Production Periods
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Citizen Parashock
Elastor
Incabloc Double-Cone
Novodiac
Paraflex
Jewels
19
21
25
26
27
31
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 12:00
-Balance at 4:30
-Balance at 6:00
Central Rotor
ETA 2834-2
Miyota 8285
Rolex 3055
Rolex 3155
Rolex 3156
Rolex 3255
Soprod C135
STP4-13
SW240-1
SW240-1 M
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