Pocket Watch Database
Illinois Grade 603 Production Charts
Note: Production dates are estimations but should be accurate within +/- 3 years.
[1912,1913,1914,1915,1916,1917,1918,1919]
[800,700,2390,200,1420,580,820,300]
Illinois Watch Co. Grade 603 Production Map Relative to Company Lifespan
Start of Production
End of Production