Pocket Watch Database
Illinois Grade 506
Grade 506 is a 17j Openface watch maufacturered by Illinois. The size 12s, Model 4 movement features a nickel finish and is adjusted to 3 positions and temperature.
Grade 506 Movement Characteristics
- Size12s
- Jewels17j
- ConfigurationOpenface
- FinishNickel
- Model4 or 4
- SettingPendant
- AdjustedYes
- Railroad GradeNo
Grade 506 Production Info
- Total Production6,030
- Number of Runs26
- Production Years1911-1918
- First Serial2,368,601
- Last Serial3,424,500
- Largest Run600
- Smallest Run10
- Most Common Run500