AM

(Adolf Michel SA, Grenchen, Switzerland)

Movements

  caliber size esc. jewels shockprot. construction features condition
65 OK
📰 74 5 3/4 x 8 3/4''' Z 6 none
H,SKM,F OK
260
📰 395 12''' A 16 none
A,HSKM,Z,F SCI OK
455 balance broken
📰 575 8 3/4''' Z 1 none
H,SKMF OK
612 OK
📰 617 8 3/4''' Z 10 none
Z,SKM,F OK
624 OK
640 OK

Details

By clicking onto the photos, you can access the detail pages of the movements
 

    AM 74

    AM 395

    AM 575

    AM 617

History

The manufactury Adolf Michel was until the 1930s one of the most important swiss ebauche manufacturers with more than 1000 employees. After the integration into the Ebauches SA, it got an external leadership and was mostly degraded to a supplier, which for example helped Felsa a lot. The famous “Bidynator” selfwinding movements, where everyone thinks of Felsa, was originally invented by AM.

The history of the Uhrenfabrik Adolf Michel is documented by Urs Roth, the great-grandchild of Adolf Michel on amsagrenchen.com.

Glossary

construction

features

  • A: lever
  • C: cylinder wheel
  • F: mainspring barrel
  • G: large driving wheel
  • H: escape wheel
  • K: third wheel
  • M: center minute wheel
  • N: decentral minute wheel
  • S: seconds wheel
  • U: transmission wheel
  • X: transmission axle
  • Z: center second pinion
The features use the terms of the Flume-Werksucher:
  • 24HA: 24hr indication (pointer)
  • AG: year indication (aperture)
  • AUT: selfwinding
  • CHR: chronographe
  • CLD: calendar
  • DIG: digital time indication
  • EL: elecromechanically powered
  • ELQ: quartz controlled electomechanically powered
  • JA: weekday indication (pointer)
  • JG: weekday indication (aperture)
  • MA: month indication (pointer)
  • MG: month indication (aperture)
  • Q: quartz controlled
  • QA: date indication (pointer)
  • QG: date indication (aperture)
  • RDR: date corrector
  • REV: alarm function
  • RMA: power reserve (hand)
  • SC: center seconds
  • SC DIGITAL: digital center seconds
  • SC?: center seconds (type unknown)
  • SCD: direct center seconds
  • SCI: indirect center seconds
  • s: decentral seconds