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
Hands
Central Hour Hand
Central Minute Hand
Small Seconds Hand at 6:00
Brand
Audemars Piguet
Winding
Hand winding
Regulators
Screwed Mobile Stud
Variable Inertia Blocks
Production Periods
1990s
2000s
2010s
2020s
Frequency
21,600 A/h
Anti-Shock
Jewels
21
Balance Mount
Balance Bridge
Back-Side Features
AP 3090
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