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
Central Seconds Hand
Brand
-ESA
Landeron
Winding
Battery
Regulators
fixed-coil contact-controlled
Production Periods
1960s
Frequency
18,000 A/h
Anti-Shock
Jewels
12
13
Balance Mount
Balance Cock
Back-Side Features
Balance
-Balance at 3:00
Landeron 4750
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