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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