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
About Grail Watch
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Complications
Date
-Big Date
-Quick Date Correction
Hacking Seconds
Hand Winding
Power Reserve Indicator
Repeater
Hands
Power Reserve Pointer at 3:00
Brand
A. Lange & Söhne
Parmigiani Fleurier
Seiko
-Credor
-Grand Seiko
-Shizukuishi Watch Studio
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Hand winding
Two Barrel
Regulators
Screw Regulator
Swan Neck Regulator
Production Periods
1990s
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
43,200 A/h
Anti-Shock
Diashock
Jewels
33
38
41
53
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 2:00
-Balance at 4:00
L901.0
PF357
Seiko 8L88
Seiko 9S63
Seiko 9S67
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