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
-Big Date
--Double Concentric Wheel Big Date
-Date by Pointer
-Instant Date Change
-Quick Date Correction
GMT Hand
-Independently-Adjustable 24 Hour Hand
Hacking Seconds
Moon Phase
Power Reserve Indicator
World Time
Hands
24 Hour Window at 3:00
Airport Window at 9:00
Big Date at 1:30
Central 24 Hour Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Pointer at 6:00
Date Window at 3:00
Date Window at 6:00
Moon Phase Wheel at 6:00
Power Reserve Pointer at 1:00
Power Reserve Pointer at 9:00
Small Seconds Hand at 6:00
Small Seconds Hand at 9:00
Brand
Miyota
Nomos
Seiko
-Credor
-Seiko Instruments Inc.
-Shizukuishi Watch Studio
Soprod
Zenith
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Hand winding
Regulators
ETACHRON
MSE
Screw Regulator
Triovis
Production Periods
1990s
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Diashock
Incabloc Double-Cone
Jewels
17
23
25
26
27
29
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 3:00
-Balance at 4:00
-Balance at 7:00
Seiko 6S Family
Miyota 6T33
Nomos Beta
Nomos Delta
Nomos Gamma
Nomos Xi
Seiko 6R27
Soprod A10-2
Zenith 682
Zenith 691
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