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
-Quick Date Correction
Hacking Seconds
Hand Winding
Hands
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Brand
Soprod
Winding
Automatic
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
Regulators
Soprod
Production Periods
2010s
Frequency
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
16
Balance Mount
Back-Side Features
Soprod M200 Date
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