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
Date
-Quick Date Correction
Day
-Quick Day Correction
Hacking Seconds
Hands
Day Window at 6:00
Brand
Valanvron
Winding
Automatic
-Central Rotor Automatic Winding
Regulators
Screw Regulator
Production Periods
2010s
Frequency
28800
Anti-Shock
Novodiac
Jewels
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
VAL-36
