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
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Complications
Chronograph
-2-Button
-Column Wheel Chronograph
–9-Column Chronograph
-Flyback Chronograph
Date
Hands
30 Minute Chronograph Hand at 3:00
Central 60 Second Chronograph Hand
Central Hour Hand
Central Minute Hand
Date Window at 4:30
Small Seconds Hand at 9:00
Brand
-Valjoux
Winding
Hand winding
Regulators
Production Periods
1950s
1960s
1970s
Frequency
18000
21600
Anti-Shock
Incabloc Double-Cone
Jewels
13
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 12:00
Column Wheel
-Column Wheel at 6:00
Valjoux 230
Valjoux 234
