Pocket Watch Database
Illinois Grade 437 (Model 1XT) Production Metrics
Grade:
437
Size:
12s
Model:
1XT
Total Runs:
8
Total Produced:
2,060
Production Era:
1917 - 1921
Earliest Serial:
#3,268,801
Latest Serial:
#3,904,400
Illinois Grade 437 (Model 1XT) Production By Year
Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1917,1918,1919,1920,1921]
[200,10,250,800,800]
Illinois Grade 437 (All Models) Production Metrics
Grade:
437
Size:
12s
Model:
1XT
Total Runs:
8
Total Produced:
2,060
Production Era:
1917 - 1921
Earliest Serial:
#3,268,801
Latest Serial:
#3,904,400
Illinois Grade 437 Production By Year
Production dates are estimations based on serial number extrapolation and should be accurate within +/- 3 years.
[1917,1918,1919,1920,1921]
[200,10,250,800,800]
Illinois Grade 437 Production Runs
| Run Sequence | Run Start | Run End | Quantity | Est. Production Year | Profile Code |
|---|---|---|---|---|---|
| 1 | 3,268,801 | 3,268,900 | 100 | 1917 | 12S-M1XT-19J-ONP-AT |
| 2 | 3,269,801 | 3,269,900 | 100 | 1917 | 12S-M1XT-19J-ONP-AT |
| 3 | 3,388,361 | 3,388,370 | 10 | 1918 | 12S-M1XT-19J-ONP-AT |
| 4 | 3,482,151 | 3,482,400 | 250 | 1919 | 12S-M1XT-19J-ONP-AT |
| 5 | 3,650,201 | 3,650,600 | 400 | 1920 | 12S-M1XT-19J-ONP-AT |
| 6 | 3,761,401 | 3,761,800 | 400 | 1920 | 12S-M1XT-19J-ONP-AT |
| 7 | 3,885,601 | 3,886,000 | 400 | 1921 | 12S-M1XT-19J-ONP-AT |
| 8 | 3,904,001 | 3,904,400 | 400 | 1921 | 12S-M1XT-19J-ONP-AT |
RUNS8 |
FIRST3,268,801 |
LAST3,904,400 |
ESTIMATED PRODUCTION2,060 |
PRODUCTION ERA1917 - 1921 |