Movement
Calibre 281
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Lignes
11.75
Mounting Diameter
26.5
Thickness
4.3
Frequency (vph)
19,800
Jewels
17
Complication
Date
Power
Manual
Shape
Round
Size
Medium
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Technical Diagram
Notes
The 281 is the date version of the 280, it was designed and released at the same time as the 280 and differs only in the date mechanism.
280: center seconds
281: date
284: excenter regulator
285: excenter regulator, date