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
Day/Night Indicator
Hands
24 Hour Hand at 1:30
24 Hour Hand at 6:00
Big Date at 12:00
Central Date Pointer
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Date Window at 4:30
Date Window at 9:00
Day/Night Indicator Disc at 10:00
Day/Night Indicator Disc at 8:00
Day/Night Indicator Pointer at 10:00
Hour Hand at 12:00
Hour Hand at 6:00
Minute Hand at 12:00
Minute Hand at 6:00
Moon Phase Wheel at 6:00
Power Reserve Pointer at 1:00
Small Seconds Hand at 6:00
Small Seconds Hand at 9:00
Brand
Agenhor
Parmigiani Fleurier
Sellita
Soprod
Zenith
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Hand winding
Two Barrel
Regulators
Screw Regulator
Soprod
Production Periods
2000s
2010s
2020s
Frequency
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
19
25
26
28
38
41
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 12:00
-Balance at 8:00
PF317
PF337
Soprod C120
SW285-1 a
SW285-1 b
SW285-1 M a
SW285-1 M b
Zenith 687
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