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
Chronograph
-2-Button
-Split Seconds Chronograph
Date
-Date by Pointer
-Quick Date Correction
-Retrograde Date
Day
-Day by Pointer
-Quick Day Correction
-Retrograde Day
Grande Complication
Hacking Seconds
Hand Winding
Leap Year
Month
-Month by Pointer
-Quick Month Correction
Moon Phase
Power Reserve Indicator
Repeater
-Minute Repeater
Week Number
Year
Hands
Day Pointer at 3:00
Brand
Audemars Piguet
ETA
Seiko
-Seiko Instruments Inc.
--Time Module Inc.
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Counter-Clockwise Automatic Winding
Regulators
ETACHRON
Screwed Mobile Stud
Production Periods
1990s
2000s
2010s
2020s
Frequency
19,800 A/h
28,800 A/h
Anti-Shock
Diashock
Incabloc Double-Cone
Jewels
21
29
31
52
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 12:00
-Balance at 3:00
AP 2885
ETA 2890-9
ETA 2891-9
Seiko 6R20
Seiko 6R21
Seiko 6R24
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