Grail Watch Reference
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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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