Pocket Watch Database

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

Serial Number Lookup