Pocket Watch Database

Lancaster Watch Co. Keystone

Grade Keystone is a 15j Adaptable watch maufacturered by Lancaster Watch Co.. The size 18s, Model 1 movement features a gilt finish and is adjusted to isochronism and temperature.

Keystone Movement Characteristics

  • Size18s
  • Jewels15j
  • ConfigurationAdaptable or Hunting
  • FinishGilt
  • Model1 or 2
  • SettingKey or Lever
  • AdjustedYes

Keystone Production Info

  • Total Production6,100
  • Number of Runs8
  • Production Years1879-1883
  • First Serial4,001
  • Last Serial35,300
  • Largest Run2,000
  • Smallest Run100
  • Most Common Run500

Associated Grades

4