Grail Watch Reference
A Reference Library for Watches from Grail Watch
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About Grail Watch
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Complications
Hands
Central Hour Hand
Central Minute Hand
Small Seconds Hand at 6:00
Brand
Eterna
Winding
Automatic
-Bumper Automatic Winding
Regulators
Production Periods
1930s
1940s
1960s
1970s
Frequency
18,000 A/h
Anti-Shock
Jewels
17
19
21
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
-Balance at 3:00
Eterna 835
Eterna-Matic 3000
Eterna 835
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