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AM 72
AM 72
AM 72


The Ebauches Trust (also known as Ebauches S.A.) was from the 1920ies on a roof organization of several ebauche manufacturers, among them the Adolf Michel S.A. (AM) of Grenchen/Switzerland. They made that caliber 72, a form caliber in ladies' size with a cylinder escapement.
With 6 jewels and a brass balance, it resembles the state of the art of pre WW II: Not ultimately precise, but pretty small and reliable.
Nevertheless, the high time of those tiny cylinder movements did not last very long, since equally small, but much more precise and reliable anchor movements took lover.

dial view
dial view

Technical data

Manufacturer AM
Caliber 72
Number of jewels 6
Escapement cylinder
Balance Brass
Shock protection(s) none
Balance cock direction clockwise
Hairspring stud fixed
Regulator type Long regulator arm
Movement construction Escapement wheel
Fourth wheel, Third wheel, Center wheel
Mainspring barrel
Functions Hour, minute
Beats per hour 18000
Size 53/4 x 83/4'''
Image in Flume Werksucher  1947 146

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