Pocket Watch Database
Illinois Grade 303 Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1910,1911,1912,1913,1914,1915,1916,1917,1918,1919]
[2200,3830,4700,5650,4000,6800,3100,7400,4700,2100]
Illinois Watch Co. Grade 303 Production Map Relative to Company Lifespan
Start of Production
End of Production