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
--6-Column Chronograph
--9-Column Chronograph
-Monopusher Chronograph
-Split Seconds Chronograph
Date
-Date by Pointer
Day
Month
Hands
30 Minute Chronograph Hand at 3:00
Central 60 Second Chronograph Hand
Central Date Pointer
Central Hour Hand
Central Minute Hand
Central Split Second Chronograph Hand
Day Window at 11:30
Month Window at 12:30
Small Seconds Hand at 9:00
Brand
-Valjoux
Winding
Hand winding
Regulators
Indexed
Production Periods
1910s
1920s
1930s
1940s
1950s
1960s
1970s
Frequency
18,000 A/h
Anti-Shock
Jewels
15
17
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 12:00
-Balance at 12:30
Column Wheel
-Column Wheel at 6:00
-Column Wheel at 6:30
Valjoux 23/72 Family
Valjoux 23 VZ
Valjoux 23C
Valjoux 24 KV
Valjoux 25 SRV
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