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
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Complications
24 Hour Hand
Date
-Instant Date Change
-Quick Date Correction
GMT Hand
-Independently-Adjustable 24 Hour Hand
Hacking Seconds
Hand Winding
Hands
Central 24 Hour Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Date Window at 6:00
Small Seconds Hand at 6:00
Small Seconds Hand at 9:00
Brand
Parmigiani Fleurier
Rolex
Seiko
-Grand Seiko
-Shizukuishi Watch Studio
Zenith
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
Two Barrel
Regulators
Screw Regulator
Production Periods
1990s
2000s
2010s
2020s
Frequency
28,800 A/h
36,000 A/h
Anti-Shock
Diashock
Paraflex
Jewels
26
27
29
32
37
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 2:00
-Balance at 8:00
PF331
PF332
PF441
Rolex 2236
Seiko 8L55
Seiko 9S85
Seiko 9S86
Zenith 660
Zenith 661
Zenith 672
Zenith 679
Zenith 680
Zenith 682
Zenith 693
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