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
-3-Button Chronograph
-Column Wheel Chronograph
--8-Column Chronograph
-Flyback Chronograph
-Vertical Clutch Chronograph
Date
-Quick Date Correction
Day
Hand Winding
Power Reserve Indicator
Hands
12 Hour Chronograph Hand at 6:00
30 Minute Chronograph Hand at 3:00
30 Minute Chronograph Hand at 9:00
Central 60 Second Chronograph Hand
Central Hour Hand
Central Minute Hand
Date Window at 3:00
Date Window at 4:30
Day Window at 3:00
Open Heart at 9:00
Power Reserve Pointer at 12:00
Small Seconds Hand at 3:00
Small Seconds Hand at 6:00
Brand
Audemars Piguet
Blancpain
Seiko
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Counter-Clockwise Automatic Winding
Hand winding
Two Barrel
Regulators
Gyromax
Screwed Balance
Production Periods
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Jewels
34
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 3:00
-Balance at 4:30
Column Wheel
-Column Wheel at 6:00
AP 2923
AP 2941
BP 1160DD
Seiko 8R48
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