Illinois Watch Co. Model 4 Grade 404

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12 size (approx. 17 3/4”’) | Hand Wind | Swiss Lever | Small Seconds |

Remarks:

  • Negative crown winding
  • Screw-set jewels (Chatons)
  • Swan-neck fine regulator (Illinois Whipspring)
  • Center wheel bridge and mainspring barrel bridge are connected, as are the escape wheel bridge and fourth wheel bridge
  • Model 3 Grade 404 is the corresponding Open Face/Lépine variant:
  • On the Illinois Model 3 Grade 404, there is a small lever on the edge of the movement at approx. 11:30 with which the movement can be brought into the winding position when removed from the watch case. This does not exist on the Model 4 Grade 404.

 

  • Listing ID: 577
  • Manufacturer / Brand: Illinois Watch Co.
  • Caliber: Model 4 Grade 404
  • Size in French Lignes: 12 size (approx. 17 3/4''')
  • Size range mm largest diameter: > 40 mm
  • Shape: Round
  • Winding: Manual (Crown)
  • Hands Setting: Crown
  • Seconds Hand: Small seconds
  • Escapement: Lever (Swiss, English, Glashütte)
  • Date, Day, Month...: None
  • Jewels: 17
  • Setting Lever Screw/Pin Position: None (Negative Winding)
  • Balance Position: Bottom (120 - 240°)
  • Shock Protection: None
  • Beats per hour: 18,000
  • Balance Type: Bimetallic screw balance with Breguet hairspring
  • Power Reserve: Unknown
  • Production Period: 1911 - 1920 (15.870 pieces)
  • Identification: Movement marked ILLINOIS WATCH Co. Based on the serial number on this website: https://pocketwatchdatabase.com/search/result/illinois/3455043
  • External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-58#post-8082654
  • External Link 2: https://pocketwatchdatabase.com/search/result/illinois/3455043
  • Country: U. S. A.
  • Contributor ©: Uhrforum.de member Badener (Andreas Kelz)

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