Pocket Watch Database
Rockford Size 18s Model 1: Grades
Model 1 Grades
| Grade | Total Grade/Model Production | Runs | Est. Production Years | Earliest Serial | Latest Serial | Profile Code |
|---|---|---|---|---|---|---|
| 11 Jewels | 3,100 | 4 | 1876 - 1878 | 301 | 68,000 | 18s-M1-11j-EGK |
| 15 Jewels | 4,450 | 6 | 1876 - 1880 | 1,801 | 107,000 | 18s-M1-15j-EGK |
| 15 Jewels Adjusted | 1,100 | 2 | 1877 - 1877 | 8,401 | 16,000 | 18s-M1-15j-EGK |
| 15 Ruby Jewels | 110 | 3 | 1876 - 1878 | 61 | 58,700 | 18s-M1-15j-EGK |
| 19 Ruby Jewels | 80 | 2 | 1876 - 1876 | 11 | 1,030 | 18s-M1-19j-EGK |
| 7 Jewels | 5,000 | 5 | 1877 - 1881 | 32,001 | 111,000 | 18s-M1-7j-EGK |
| 9 Jewels | 7,950 | 8 | 1876 - 1881 | 101 | 130,000 | 18s-M1-9j/11j-EGK/EGT |
| C | 1,000 | 1 | 1877 - 1877 | 9,001 | 10,000 | 18s-M1-9j-EGK |
| Unknown | 91,500 | 86 | 1876 - 1882 | 201 | 153,000 | 18s-M1 |