Pocket Watch Database
Illinois Grade 401 Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1911,1912,1913,1914,1915,1916,1917,1918]
[50,160,3100,3600,4550,12050,4210,800]
Illinois Watch Co. Grade 401 Production Map Relative to Company Lifespan
Start of Production
End of Production