Pocket Watch Database

There is an alternative result available for this serial number. View the result for E. Howard (Keystone) movement #3543.
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"3543" 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:

E. Howard & Co.
Manufacturer: E. Howard & Co.
Manufacturer Location: Roxbury, Massachusetts
Movement Serial Number: 3543
Model: Series III
Estimated Production Date: April 18, 1863
Size: N
Jewels: 15j
Jewel Setting: Burnished Jewels
Movement Configuration: Adaptable
Movement Finish: Gilt
Movement Setting: Key
Plate: 3/4 Plate
Regulator: Plain
Adjusted: Yes
Adjusted to Position: No
Adjusted to Temperature: Yes
Movement Markings: E. Howard & Co
N
Boston
Reed's Patent
Nov. .
Data Research: E. Howard & Co. Factory Abstracts (Bob Rolfe)
Case: Various
Run ID: 24.G23.S20.M16.E23.K23.15J24
Database Version: v52.235
Registry Population: 1 (4.00%)

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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.


esoxhunter Top Contributor Supporter 127 · December 18, 2023

Serial Number 3543 was reported as accurate.