Pocket Watch Database


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.
From the American Horology Archive:
Hamilton Grade 930 Pocket Watch

Hamilton Watch Co.

Grade: 930

Private Label(s) in Run:

A. P. Sherburne - Concord, N.H.

What is a Private Label?
Manufacturer: Hamilton Question Mark
Manufacturer Location: Lancaster, Pennsylvania Question Mark
Movement Serial Number: 4280 Question Mark
Grade: 930 Question Mark
Model: 1 Question Mark
Class: 3 Question Mark
Estimated Production Year: 1894 Question Mark
Run Quantity: 300 Question Mark
Grade/Model Run: 1 of 12 Question Mark
Grade/Model Total Production: 4,200 Question Mark
Size: 18s Question Mark
Jewels: 16j Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Full Plate Question Mark
Regulator: Goldthwait Question Mark
Hairspring: Breguet Question Mark
Adjusted: No Question Mark
Railroad Grade: No Question Mark
Dial Feet Locations: 2.6, 18.0, 38.2 Question Mark
Case: Various Question Mark
Run ID: 19.930G1.18S19.181M7.O7.L19.16J9 Question Mark
Data Research: 1953 Hamilton Serial List
Question Mark
Database Version: v52.528 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
12.64 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
5.55 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
0.039% Question Mark
Registry Population:
Scoped for This Run Only
9 (3.00%) Question Mark
Research Note: #4174: Verified as Private Label for "A. P. Sherburne - Concord, N.H." [NAWCC].

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Verification Reports for this Run

The following reports have been graciously submitted by dedicated members in reference to this production run. These reports are useful to verify data and track inaccuracies that require further research. Please note that reports may contain inaccurate information or assumptions that must be dilligently considered with other available sources.


Anonymous · June 23, 2024

Serial Number 4100 was reported as accurate.

Anonymous · March 31, 2024

Serial Number 4233 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · June 11, 2023

Serial Number 4022 was reported as accurate.

Anonymous · September 21, 2020

Serial Number 4266 was reported as accurate.

Anonymous · June 22, 2019

Serial Number 4023 was reported as inaccurate.

No further details were submitted with the report.

Gimparoo Supporter 703 · May 13, 2018

Serial Number 4060 was reported as accurate.

Anonymous · June 21, 2017

Serial Number 4181 was reported as accurate.

Anonymous · June 15, 2017

Serial Number 4181 was reported as accurate.

Anonymous · December 3, 2016

Serial Number 4127 was reported as accurate.

rjandladyj 190 · March 13, 2016

Serial Number 4171 was reported as accurate.

rock862 242 · March 9, 2016

Serial Number 4171 was reported as accurate.

Anonymous · December 6, 2015

Serial Number 4188 was reported as accurate.

Anonymous · March 24, 2015

Serial Number 4127 was reported as accurate.

Anonymous · January 18, 2015

Serial Number 4127 was reported as accurate.

Anonymous · January 6, 2013

Serial Number 4299 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Plate changed from Unknown to Full
Hamilton Grade 930 Pocket Watch