Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Grail Watch Blog
The Watch Files Podcast
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
24 Hour Hand
Chronograph
-2-Button
-Cam Switching Chronograph
-Column Wheel Chronograph
--7-Column Chronograph
--9-Column Chronograph
-Monopusher Chronograph
Date
-Date by Pointer
-Quick Date Correction
Day
-Day by Pointer
-Quick Day Correction
GMT Hand
Hacking Seconds
Hand Winding
Modular
Month
-Quick Month Correction
Moon Phase
Year
Hands
Month Window at 12:30
Brand
ETA
-Valjoux
Tianjin
-Sea-Gull
Venus
Winding
Automatic
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
Hand winding
Regulators
ETACHRON
Production Periods
1910s
1920s
1930s
1940s
1950s
1960s
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
18,000 A/h
21,600 A/h
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
17
25
29
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 12:00
Column Wheel
-Column Wheel at 5:00
-Column Wheel at 6:00
ETA 7751
ETA 7761
ST2503
Valjoux 23C
Valjoux 72c VZHC
Valjoux 730
Valjoux 78 VZSC
Valjoux 88 VZHCL
Valjoux 886
Valjoux 90 VZSCL
Venus 191
Venus 199
Venus 200
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