Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Grail Watch Blog
Reference Documents
1979 Citizen Movement Table
Seiko Blue Book Automatic Movement Chronology
Seiko Laurel Brochure
Seiko List of Basic and Derivative Calibres
About Grail Watch
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Complications
24 Hour Hand
Date
-Bi-Directional Date Correction
-Quick Date Correction
Hacking Seconds
Power Reserve Indicator
World Time
Hands
24 Hour Window at 3:00
Central Hour Hand
Central Minute Hand
City Window at 12:00
Date Window at 3:00
Date Window at 6:00
Power Reserve Pointer at 1:00
Power Reserve Pointer at 12:00
Small Seconds Hand at 6:00
Brand
-Deutsche Uhrenwerke
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Hand winding
Two Barrel
Regulators
DUW
ETACHRON
Nomos Swing System
Screwed Balance
Screwed Mobile Stud
Swan Neck Regulator
Production Periods
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
17
23
26
27
29
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 3:00
-Balance at 4:00
DUW 4000/5000 Family
DUW 1001
DUW 2002
DUW 3001
DUW 4101
DUW 4301
DUW 4401
DUW 5001
DUW 5101
DUW 5201
DUW 6101
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