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


Grade Production Runs Lowest Highest Start End Profile Code/Image
401 28,520 86 2,337,031 3,306,000 1911 1918
21,470 62 2,337,031 3,306,000 1911 1918 12s-M3-11j-ONP-U-
50 2,337,031 2,337,080 1911
30 2,488,071 2,488,100 1912
80 2,488,701 2,488,780 1912
600 2,515,401 2,516,000 1913
500 2,551,201 2,551,700 1913
400 2,558,601 2,559,000 1913
200 2,585,801 2,586,000 1913
300 2,589,001 2,589,300 1913
600 2,596,401 2,597,000 1914
200 2,609,801 2,610,000 1914
300 2,626,001 2,626,300 1914
200 2,632,801 2,633,000 1914
300 2,641,001 2,641,300 1914
400 2,657,601 2,658,000 1914
300 2,659,001 2,659,300 1914
300 2,687,401 2,687,700 1914
100 2,690,601 2,690,700 1915
200 2,733,201 2,733,400 1915
300 2,743,601 2,743,900 1915
200 2,753,001 2,753,200 1915
100 2,763,901 2,764,000 1915
100 2,775,001 2,775,100 1915
300 2,776,101 2,776,400 1915
100 2,804,901 2,805,000 1915
200 2,819,001 2,819,200 1915
50 2,837,521 2,837,570 1915
300 2,837,601 2,837,900 1915
200 2,842,801 2,843,000 1915
400 2,864,501 2,864,900 1915
100 2,870,901 2,871,000 1915
600 2,876,001 2,876,600 1916
300 2,878,701 2,879,000 1916
100 2,886,001 2,886,100 1916
100 2,886,901 2,887,000 1916
300 2,893,001 2,893,300 1916
100 2,908,901 2,909,000 1916
500 2,911,001 2,911,500 1916
400 2,914,101 2,914,500 1916
600 2,919,001 2,919,600 1916
500 2,924,501 2,925,000 1916
1,000 2,927,001 2,928,000 1916
200 2,931,001 2,931,200 1916
100 2,931,901 2,932,000 1916
300 2,933,001 2,933,300 1916
100 2,944,301 2,944,400 1916
300 2,948,501 2,948,800 1916
1,000 2,958,001 2,959,000 1916
100 2,991,601 2,991,700 1916
1,000 2,997,001 2,998,000 1916
500 2,998,501 2,999,000 1916
1,000 3,066,001 3,067,000 1916
1,000 3,075,001 3,076,000 1916
1,000 3,132,001 3,133,000 1917
220 3,169,001 3,169,220 1917
10 3,169,251 3,169,260 1917
30 3,169,271 3,169,300 1917
600 3,169,401 3,170,000 1917
400 3,180,601 3,181,000 1917
900 3,240,001 3,240,900 1917
600 3,292,001 3,292,600 1918
100 3,305,801 3,305,900 1918
100 3,305,901 3,306,000 1918
6,650 23 2,406,001 3,204,000 1912 1917 12s-M4-11j-HNP-U-
50 2,406,001 2,406,050 1912
400 2,521,601 2,522,000 1913
100 2,558,001 2,558,100 1913
300 2,573,401 2,573,700 1913
300 2,594,201 2,594,500 1913
200 2,626,801 2,627,000 1914
200 2,632,001 2,632,200 1914
100 2,659,801 2,659,900 1914
100 2,664,001 2,664,100 1914
200 2,748,801 2,749,000 1915
500 2,783,301 2,783,800 1915
400 2,849,001 2,849,400 1915
300 2,856,401 2,856,700 1915
300 2,867,701 2,868,000 1915
200 2,870,001 2,870,200 1915
550 2,878,101 2,878,650 1916
300 2,904,701 2,905,000 1916
100 2,908,001 2,908,100 1916
1,000 3,021,001 3,022,000 1916
50 3,139,251 3,139,300 1917
200 3,203,001 3,203,200 1917
500 3,203,201 3,203,700 1917
300 3,203,701 3,204,000 1917
400 1 2,671,201 2,671,600 1914 1914 12s-M3-11j-HNP-U-
400 2,671,201 2,671,600 1914