Illinois
Illinois Grade 427
Grade 427 is a 19 Jewels Openface watch manufactured by Illinois. The size 12s, Model 3 movement features a Nickel finish and is adjusted to 3 positions and temperature. Illinois manufactured a total of 3,100 Grade 427 movements in 5 distinctive runs.
Grade 427 Movement Characteristics
| Size | 12s |
|---|---|
| Jewels | 19 Jewels |
| Configuration | Openface |
| Finish | Nickel |
| Model | 3 |
| Setting | Pendant |
| Adjusted | Yes |
| Railroad Grade | No |
| Profile Code | 12s-M3-19j-ONP |
Grade 427 Production Info
| Total Production | 3,100 |
|---|---|
| Number of Runs | 5 |
| Production Years | 1921-1927 |
| First Serial | 3,932,101 |
| Last Serial | 4,866,000 |
| Largest Run | 1,000 |
| Smallest Run | 200 |