Pocket Watch Database
Illinois Grade 604 Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1912,1913,1914,1915,1916,1917,1918,1919,1920,1921]
[2300,2220,3170,2600,4750,2980,1600,2350,700,150]
Illinois Watch Co. Grade 604 Production Map Relative to Company Lifespan
Start of Production
End of Production