Hamilton
Hamilton Grade 900
Grade 900 is a 19 Jewels Openface watch manufactured by Hamilton. The size 12s, Model 1 movement features a Nickel finish and is adjusted to 5 positions, isochronism and temperature. Hamilton manufactured a total of 24,700 Grade 900 movements in 15 distinctive runs.
Grade 900 Movement Characteristics
| Size | 12s |
|---|---|
| Jewels | 19 Jewels |
| Configuration | Openface |
| Finish | Nickel |
| Model | 1 |
| Setting | Pendant |
| Adjusted | Yes |
| Railroad Grade | No |
| Profile Code | 12s-M1-19j-ONP |
Grade 900 Production Info
| Total Production | 24,700 |
|---|---|
| Number of Runs | 15 |
| Production Years | 1910-1923 |
| First Serial | 1,750,001 |
| Last Serial | 1,937,300 |
| Largest Run | 11,000 |
| Smallest Run | 200 |