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From the American Horology Archive:
U.S. Watch Co. (Waltham, Mass)

Introduced September 1892

Manufacturer: U.S. Watch Co. (Waltham, Mass) ?
Manufacturer Location: Waltham, Massachusetts ?
Movement Serial Number: 145026 ?
Model: 1892 ?
Estimated Production Year: 1896 ?
Size: 18s ?
Jewels: 15j ?
Jewel Setting: Gold Settings (Screw-Set) ?
Movement Configuration: Openface ?
Movement Finish: Acid Etched ?
Finish Pattern: Flowers ?
Movement Setting: Lever ?
Plate: Full Plate ?
Regulator: Plain ?
Hairspring: Flat ?
Movement Markings: U.S. Watch Co. Waltham, Mass. ?
Case: Various ?
Run ID: 232.G38.18S115.181892M26.O68.L188.15J67 ?
Database Version: v52.978 ?
Registry Population: Scoped for This Run Only: 2 (2.00%) ?