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
-Column Wheel Chronograph
--6-Column Chronograph
-Monopusher Chronograph
Hands
Brand
Landeron
Universal
Winding
Hand winding
Regulators
Production Periods
1930s
1940s
1950s
1960s
Frequency
Anti-Shock
Jewels
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Landeron 48 Family
Universal 335
Universal 339
Universal 60
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