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
Chronograph
-3-Button Chronograph
-Column Wheel Chronograph
--8-Column Chronograph
Date
-Big Date
--Double Wheel Big Date
Day
-Day by Pointer
Leap Year
Month
-Month by Pointer
Moon Phase
-122-Year Moon Phase
Perpetual Calendar
Hands
Day/Night Indicator Pointer at 9:00
Brand
A. Lange & Söhne
Winding
Hand winding
Regulators
Swan Neck Regulator
Variable Inertia Blocks
Production Periods
2010s
2020s
Frequency
18,000 A/h
Anti-Shock
Jewels
45
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
L952.1
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