Pocket Watch Database
Mason Pocket Watch
Mason was a grade of pocket watch movements manufactured by Illinois Watch Co..
The Illinois Watch Co. manufactured watches in Springfield, Illinois from approximately 1869 to 1948. See more information about Illinois Watch Co. or find out more information about your watch by conducting a serial number lookup.
Illinois Watch Co.
Initial Marking: I.W.Co.
Location: Springfield, Illinois
Years of Operation: 1869-1948
Purchased by Hamilton Watch Co., 1927
Production Jewels: 7-23 Jewels
Production Sizes: Wide Variety
Total Production: 5,600,000+
Factory Building Status: The original Illinois Watch Company factory building no longer exists. However, a later expansion was built to serve as a new frontage for the factory. Part of this addition still stands, and a modern structure has been built around it.