Grail Watch Reference
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Complications
24 Hour Hand
Date
-Big Date
--Double Concentric Wheel Big Date
--Overlapping Concentric Big Date
-Date by Pointer
-Quick Date Correction
-Semi-Instantaneous Date Change
Day
-Quick Day Correction
-Retrograde Day
GMT Hand
-Independently-Adjustable 24 Hour Hand
Hacking Seconds
Hand Winding
Power Reserve Indicator
Hands
Big Date at 3:00
Central 24 Hour Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Pointer at 6:00
Date Window at 3:00
Power Reserve Pointer at 7:00
Power Reserve Pointer at 9:30
Retrograde Day Pointer at 2:30
Small Seconds Hand at 6:00
Brand
ETA
-Valgranges
Nomos
Seiko
-Credor
-Seiko Instruments Inc.
--Time Module Inc.
Sellita
Soprod
Zenith
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Seiko Magic Lever Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
Hand winding
Regulators
ETACHRON
MSE
Screw Regulator
Screwed Mobile Stud
Valjoux
Production Periods
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Diashock
Incabloc Double-Cone
Novodiac
Jewels
17
21
22
24
25
31
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
3/4 Plate
Balance
-Balance at 1:30
-Balance at 12:00
-Balance at 3:00
-Balance at 4:30
-Barrel at 12:00
-Barrel at 7:30
Central Rotor
ETA Valgranges Family
Nomos Alpha Family
Sellita SW200 Family
Soprod A10 Family
ETA 2826-2
ETA 2896
ETA 2897
Nomos Alpha
Seiko 4S76
Seiko 7S25
Soprod A10-2
Valgranges A07.111
Zenith 67
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