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
About Grail Watch
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Complications
Chronograph
-2-Button
-Column Wheel Chronograph
--7-Column Chronograph
-Split Seconds Chronograph
Hands
30 Minute Chronograph Hand at 3:00
Central Hour Hand
Central Minute Hand
Central Split Second Chronograph Hand
Small Seconds Hand at 6:00
Small Seconds Hand at 9:00
Brand
Audemars Piguet
Venus
Winding
Hand winding
Regulators
Variable Inertia Blocks
Production Periods
1940s
1950s
2020s
Frequency
18,000 A/h
21,600 A/h
Anti-Shock
Jewels
19
26
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 1:30
Column Wheel
-Column Wheel at 5:00
AP 5201
Venus 179
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