Pocket Watch Database

Illinois Grade 310

Grade 310 is a 23j Openface watch maufacturered by Illinois. The size 16s, Model 7 movement features a nickel finish and is adjusted to 6 positions and temperature.

Grade 310 Movement Characteristics

  • Size16s
  • Jewels23j
  • ConfigurationOpenface
  • FinishNickel
  • Model6 or 7
  • SettingPendant
  • AdjustedYes
  • Railroad GradeNo

Grade 310 Production Info

  • Total Production40
  • Number of Runs2
  • Production Years1912-1913
  • First Serial2,357,721
  • Last Serial2,373,400
  • Largest Run20
  • Smallest Run20
  • Most Common Run20