Movement
Calibre 27M
← Back to all Calibres1944 – 1957
Lignes
12
Mounting Diameter
27
Thickness
3.2
Frequency (vph)
18,000
Jewels
17
Hand Sizes
1.35, 0.75
Complication
Subsidiary Seconds
Power
Manual
Shape
Round
Size
Large
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Technical Diagram
Notes
Derived from the 12.68Z and 27O, M designation stands for 'mince', thin in French. Visually similar to the 27O but thinner, intended for use in gold cased watches, it would have a higher level of finishing than the 12.68Z.