Pocket Watch Database
Access Date: August 18, 2022
"7330" could possibly indicate the grade of the watch and not the serial number of your movement. Serial numbers are usually more than a few digits.
Due to the lack of existing factory records, our United States Watch Co. (Marion) database has been reconstructed using observations of known watches.
As a result, the information may contain inaccuracies. Please let us know if you have details that can improve the database.
From the American Horology Archive:
United States Watch Co. (Marion)
Grade: Marion Watch Co.
Mixed Run: 15-Jewel and 17-Jewel Movements
Private Label(s) in Run:
What is a Private Label?
Royal Gold American Watch - New York
|Manufacturer:||U.S. Watch Co. (Marion, NJ)|
|Manufacturer Location:||Marion, New Jersey|
|Movement Serial Number:||7330|
|Grade:||Marion Watch Co.|
|Estimated Production Year:||1867|
|Adjusted to Temperature:||Yes|
|U.S. Patents:||D2281, D2055|
|Movement Markings:||Marion Watch Co.
Mch 13th 66
Research Note: Mixed Setting Types In Run: KS/BS/LS