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
24 Hour Hand
Date
-Bi-Directional Date Correction
-Big Date
-Quick Date Correction
Hacking Seconds
Moon Phase
Power Reserve Indicator
World Time
Hands
24 Hour Window at 3:00
Airport Window at 9:00
Big Date at 1:00
Central Hour Hand
Central Minute Hand
Date Window at 3:00
Date Window at 6:00
Hour Hand at 9:00
Minute Hand at 9:00
Moon Phase Wheel at 12:00
Power Reserve Pointer at 3:00
Small Seconds Hand at 5:00
Small Seconds Hand at 6:00
Brand
A. Lange & Söhne
Nomos
-Deutsche Uhrenwerke
Parmigiani Fleurier
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Micro-Rotor Automatic Winding
-Uni-Directional Automatic Winding
Hand winding
Two Barrel
Regulators
DUW
ETACHRON
Nomos Swing System
Screwed Mobile Stud
Swan Neck Regulator
Triovis
Variable Inertia Blocks
Production Periods
1990s
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
26
27
29
53
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
Back-Side Features
-Balance at 4:00
DUW 3001
DUW 6101
L901.0
Nomos Epsilon
Nomos Xi
Nomos Zeta
PF701
PF707
PF708
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