Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Patent Database
Grail Watch Blog
The Watch Files Podcast
Reference Documents
Vocabulary
About Grail Watch
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Complications
Hands
Lépine Small Seconds Hand
Brand
ETA
-Unitas
Landeron Swiss Movements
Seiko
-Shizukuishi Watch Studio
Tianjin
-Sea-Gull
Zenith
Winding
Hand winding
Regulators
ETACHRON
Indexed
Screw Regulator
Production Periods
1890s
1900s
1910s
1920s
1960s
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
18,000 A/h
21,600 A/h
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
15
17
20
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 3:00
-Barrel at 12:00
-Barrel at 7:30
ETA 6497-1
ETA 6497-2
Graizely Octava
L97
Seiko 8L34
ST3600
Zenith
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