Pocket Watch Database

Location: Lancaster, Pennsylvania

Years of Operation: 1884-1891

Production Jewels: 7-20 Jewels

Production Sizes: 18s, 8s, 6s

Originated from the Lancaster Watch Co. and purchased by Hamilton Watch Co., 1891

Serial Number Lookup

Company Timeline


Keystone Standard Watch Co. begins operations.


Keystone Standard Watch Co. ceases operations.

Successor: Hamilton