Pocket Watch Database

Illinois Grade 306

Grade 306 is a 17j Openface watch maufacturered by Illinois. The size 16s, Model 7 movement features a nickel finish and is adjusted to 3 positions and temperature.

Grade 306 Movement Characteristics

  • Size16s
  • Jewels17j
  • ConfigurationOpenface
  • FinishNickel
  • Model6 or 7 or 9 or 8
  • SettingPendant
  • AdjustedYes
  • Railroad GradeNo

Grade 306 Production Info

  • Total Production44,030
  • Number of Runs159
  • Production Years1909-1925
  • First Serial2,175,701
  • Last Serial4,700,000
  • Largest Run1,300
  • Smallest Run10
  • Most Common Run100