Pocket Watch Database
Illinois Grade 437 Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1917,1918,1919,1920,1921]
[200,10,250,800,800]
Illinois Watch Co. Grade 437 Production Map Relative to Company Lifespan
Start of Production
End of Production
| Grade | Production | Runs | Lowest | Highest | Start | End | Profile Code/Image |
|---|---|---|---|---|---|---|---|
| 437 | 2,060 | 8 | 3,268,801 | 3,904,400 | 1917 | 1921 | |
| 100 | 3,268,801 | 3,268,900 | 1917 | ||||
| 100 | 3,269,801 | 3,269,900 | 1917 | ||||
| 10 | 3,388,361 | 3,388,370 | 1918 | ||||
| 250 | 3,482,151 | 3,482,400 | 1919 | ||||
| 400 | 3,650,201 | 3,650,600 | 1920 |
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| 400 | 3,761,401 | 3,761,800 | 1920 |
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| 400 | 3,885,601 | 3,886,000 | 1921 | ||||
| 400 | 3,904,001 | 3,904,400 | 1921 |