Movement
Calibre 23Z
← Back to all Calibres1947 – 1958
Lignes
10.5
Mounting Diameter
23.3
Thickness
3.5
Frequency (vph)
18,000
Jewels
17
Power Reserve
44
Hand Sizes
1.34, 0.76, 0.20
Complication
Subsidiary Seconds
Power
Manual
Shape
Round
Size
Medium
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Technical Diagram
Notes
The 23Z was designed to be thinner than the 10.68Z but more robust than the thinner and more delicate 23M. It was also designed to be more easily machine manufactured with less human interventions than the 23M and it would essentially replace both the 10.68Z and 23M after its introduction.
23Z: sub second
23ZD: sub second, date
23ZS, 23ZN: sweep second
23ZSD: sweep second, date