Information Provided by PocketWatchDatabase.com:
https://new.pocketwatchdatabase.com/search/result/hamilton/4280/grade
https://new.pocketwatchdatabase.com/search/result/hamilton/4280/grade
Access Date: June 3, 2026
Hamilton Watch Co.
Grade: 930
We noticed that you entered a relatively short serial number.
"4280" 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.
"4280" 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.
This lookup section is not available for this movement.