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
Annual Calendar
Date
-Date by Pointer
Day
-Day by Pointer
Hacking Seconds
Modular
Month
-Month by Pointer
Moon Phase
-122-Year Moon Phase
Power Reserve Indicator
Tourbillon
Hands
Central Hour Hand
Central Minute Hand
Date Pointer at 9:00
Day Pointer at 9:00
Month Pointer at 3:00
Moon Phase Wheel at 6:00
Open Heart at 6:00
Power Reserve Pointer at 8:00
Small Seconds Hand at 4:00
Small Seconds Hand at 6:00
Brand
A. Lange & Söhne
Winding
Hand winding
Regulators
Screwed Balance
Swan Neck Regulator
Production Periods
2010s
2020s
Frequency
21,600 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
20
23
26
29
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
L051.1
L051.2
L051.3
L102.1
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