Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Grail Watch Blog
The Watch Files Podcast
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
Hacking Seconds
Power Reserve Indicator
Hands
Central Hour Hand
Central Minute Hand
Power Reserve Pointer at 1:00
Small Seconds Hand at 6:00
Brand
Nomos
-Deutsche Uhrenwerke
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Hand winding
Regulators
DUW
ETACHRON
Nomos Swing System
Screwed Mobile Stud
Triovis
Production Periods
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
17
26
27
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 3:00
-Balance at 4:00
DUW 3001
DUW 4301
DUW 5001
Nomos Alpha
Nomos Alpha.2
Nomos Epsilon
Nomos Gamma
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