Pocket Watch Database
Rockford Size 12s Model 1: Grades
Model 1 Grades
| Grade | Total Grade/Model Production | Runs | Est. Production Years | Earliest Serial | Latest Serial | Profile Code |
|---|---|---|---|---|---|---|
| Unknown | 1,500 | 2 | 1912 - 1914 | 890,501 | 935,000 | 12s-M1 |
| 300 | 300 | 3 | 1908 - 1910 | 772,301 | 806,100 | 12s-M1-23j-HNP |
| 310 | 400 | 3 | 1908 - 1908 | 772,201 | 787,200 | 12s-M1-21j-HNP |
| 320 | 2,800 | 6 | 1908 - 1913 | 772,001 | 922,000 | 12s-M1-17j-HNP |
| 330 | 5,100 | 9 | 1908 - 1913 | 772,101 | 900,000 | 12s-M1-17j-HNP |
| 340 | 100 | 1 | 1910 - 1910 | 814,601 | 814,700 | 12s-M1-21j-HNP |
| 350 | 1,800 | 3 | 1909 - 1910 | 814,001 | 823,000 | 12s-M1-17j-HNP |
| 360 | 4,500 | 5 | 1910 - 1913 | 839,001 | 901,000 | 12s-M1-15j-HNP |
| 370 | 1,000 | 1 | 1910 - 1910 | 836,001 | 837,000 | 12s-M1-21j-HNP |
| 390 | 1,000 | 1 | 1911 - 1911 | 856,001 | 857,000 | 12s-M1-7j-HNP |