IWC 431

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5 1/4 x 6 3/4”’ | Hand Wind | Swiss Lever | No Seconds |

Remarks:

  • Smallest IWC movement

 

  • Listing ID: 8142
  • Manufacturer / Brand: IWC
  • Caliber: 431
  • Size in French Lignes: 5 1/4 x 6 3/4''' (4 3/4'' according to manufacturer)
  • Size range mm largest diameter: 0 - 22 mm
  • Shape: Form
  • Winding: Manual (Crown)
  • Hands Setting: Crown
  • Seconds Hand: None
  • Escapement: Lever (Swiss, English, Glashütte)
  • Date, Day, Month...: None
  • Jewels: 17
  • Setting Lever Screw/Pin Position: Right
  • Balance Position: Right (0 - 120°)
  • Shock Protection: Incabloc
  • Beats per hour: 19,800
  • Balance Type: Monometallic screw balance
  • Power Reserve: Unknown
  • Production Period: Unknown, probably around 1959+
  • Identification: Dial side marked with IWC logo. Barrel bridge marked with C 431. Listed in a supplement from 1959 to the "Official Catalogue of genuine Swiss Watch repair parts".
  • Country: Switzerland
  • Contributor ©: Uhrforum.de member Badener (Andreas Kelz)

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