Pocket Watch Database
Reference Library
Keystone Pocket Watch
Keystone was a grade of pocket watch movements manufactured by Lancaster Watch Co..
The manufactured watches in Lancaster, Pennsylvania from approximately 1879 to 1884. See more information about Lancaster Watch Co. or find out more information about your watch by conducting a serial number lookup.
Location: Lancaster, Pennsylvania
Years of Operation: 1879-1884
Predecessor: Adams & Perry Watch Manufacturing Co.
Successor: Keystone Watch Co.
Reorganized as the Keystone Standard Co., 1886
Production Jewels: 7-20 Jewels
Production Sizes: 18s, 8s
Total Production: ~215,000