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
-Date by Pointer
-Quick Date Correction
-Retrograde Date
Day
-Day by Pointer
-Quick Day Correction
Hacking Seconds
Leap Year
Modular
Month
-Month by Pointer
-Quick Month Correction
Moon Phase
Perpetual Calendar
Repeater
-Minute Repeater
Year
Hands
Moon Phase Wheel at 9:00
Brand
ETA
Parmigiani Fleurier
Soprod
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Hand winding
Regulators
Soprod
Production Periods
1990s
2000s
2010s
Frequency
18,000 A/h
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
21
33
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 12:00
ETA 2891-9
PF252
Soprod C105
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