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Complications
Chronograph
-Cam Switching Chronograph
-Column Wheel Chronograph
--6-Column Chronograph
-Monopusher Chronograph
-Split Seconds Chronograph
Date
Day
GMT Hand
Hacking Seconds
Hands
30 Minute Chronograph Hand at 3:00
Central 60 Second Chronograph Hand
Central Date Pointer
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Central Split Second Chronograph Hand
Lépine Small Seconds Hand
Small Seconds Hand at 6:00
Small Seconds Hand at 9:00
Brand
Bulova
-Valjoux
Vénus
Winding
Battery
Hand winding
Regulators
Indexed
Screwed Balance
Tuning Fork
Production Periods
1910s
1920s
1930s
1940s
1950s
1960s
1970s
Frequency
18,000 A/h
360 Hz
Anti-Shock
Jewels
15
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 3:00
-Barrel at 10:30
-Barrel at 7:30
Battery
-Battery at 4:30
Tuning Fork
-Tuning Fork at 12:00
Accutron 218
Graizely Octava
Valjoux 24 KV
Valjoux 57
Valjoux 7
Valjoux 8 KL
Vénus 103 CHR
Venus 180
Venus 208
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