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
--Overlapping Concentric Big Date
-Date by Pointer
-Quick Date Correction
-Semi-Instantaneous Date Change
Day
-Quick Day Correction
-Retrograde Day
GMT Hand
-Independently-Adjustable 24 Hour Hand
Hacking Seconds
Hand Winding
Power Reserve Indicator
Hands
Big Date at 3:00
Central 24 Hour Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Pointer at 6:00
Date Window at 3:00
Power Reserve Pointer at 7:00
Power Reserve Pointer at 9:30
Retrograde Day Pointer at 2:30
Small Seconds Hand at 6:00
Brand
ETA
-Valgranges
Nomos
Seiko
-Credor
-Seiko Instruments Inc.
--Time Module Inc.
Sellita
Soprod
Zenith
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Seiko Magic Lever Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
Hand winding
Regulators
ETACHRON
MSE
Screw Regulator
Screwed Mobile Stud
Production Periods
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Diashock
Incabloc Double-Cone
Novodiac
Jewels
17
21
22
24
25
31
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 12:00
-Balance at 3:00
-Balance at 5:00
Nomos Alpha Family
Sellita SW200 Family
Soprod A10 Family
ETA 2826-2
ETA 2896
ETA 2897
Nomos Alpha
Seiko 4S76
Seiko 7S25
Soprod A10-2
Valgranges A07.111
Zenith 67
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