Pocket Watch Database

Illinois Grade 101

Grade 101 is a 11j Openface watch maufacturered by Illinois. The size 18s, Model 6 movement features a nickel finish.

Grade 101 Movement Characteristics

  • Size18s
  • Jewels11j
  • ConfigurationOpenface
  • FinishNickel
  • Model2 or 3 or 1 or 4 or 6
  • SettingLever
  • AdjustedNo
  • Railroad GradeNo

Grade 101 Production Info

  • Total Production87,950
  • Number of Runs213
  • Production Years1879-1895
  • First Serial200,001
  • Last Serial1,269,400
  • Largest Run4,000
  • Smallest Run10
  • Most Common Run100

Research Notes

Meggers/Ehrhardt list Grade 101 as adjusted to temperature. However, catalog descriptions do not support this claim. Additionally, no Grade 101 movements have been found marked "Adjusted."

Some private label movements were upgraded to 15 Jewels (typically marked as such and would likely be considered grade "101 1/2").

Similar to the Grade 99 without the patent regulator.