Pocket Watch Database

Illinois Grade 509

Grade 509 is a 21j Openface watch maufacturered by Illinois. The size 12s, Model 4 movement features a nickel finish and is adjusted to 5 positions and temperature.

Grade 509 Movement Characteristics

  • Size12s
  • Jewels21j
  • ConfigurationOpenface
  • FinishNickel
  • Model4 or 4
  • SettingPendant
  • AdjustedYes
  • Railroad GradeNo

Grade 509 Production Info

  • Total Production3,067
  • Number of Runs21
  • Production Years1911-1920
  • First Serial2,386,711
  • Last Serial3,789,000
  • Largest Run400
  • Smallest Run7
  • Most Common Run10