Movement
Calibre 431
← Back to all Calibres1967 – 1972
Lignes
11.5
Mounting Diameter
25.6
Thickness
4.8
Frequency (vph)
36,000
Jewels
17
Power Reserve
40
Hand Sizes
1.50, 0.90, 0.21
Complication
Center Seconds, Date
Power
Automatic
Shape
Round
Size
Medium
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Technical Diagram
Notes
The 431 was the date version of the 430 and planned/ released at the same time. The movement's balance vibrates at 36,000 vph.
430: Center Seconds
431: Center Seconds, Date
432: No Seconds
433: No Seconds, Date