Pocket Watch Database


Due to the lack of existing factory records, our E. Howard Watch Co. (Keystone) 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:
E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch
E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 3

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 941634 Question Mark
Grade: Series 3 Question Mark
Model: 1905 Question Mark
Estimated Production Year: Login to View for Free Question Mark
Run Quantity: Login to View for Free Question Mark
Grade/Model Run: Login to View for Free Question Mark
Grade/Model Total Production: Login to View for Free Question Mark
Variant Est. Production: Login to View for Free Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Material: Login to View for Free Question Mark
Jewel Setting: Login to View for Free Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Login to View for Free Question Mark
Movement Setting: Pendant Question Mark
Wind Mechanism: Pendant Question Mark
Plate: 3/4 Plate Question Mark
Regulator: Login to View for Free Question Mark
Hairspring: Login to View for Free Question Mark
Pallet Jewel Material: Sapphire Question Mark
Standard Dial Type: Login to View for Free Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 3 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
U.S. Patents: Login to View for Free Question Mark
Dial Feet Locations: Login to View for Free Question Mark
Movement Markings: Login to View for Free
Case: Various Question Mark
Run ID: 72.G29.16S47.161905M46.O43.P62.17J50 Question Mark
Database Version: v52.645 Question Mark
Advanced Metrics
Members Only Data. Login or create a free account to unlock.
Registry Population:
Scoped for This Run Only
47 (2.35%) Question Mark
14 Additional Member-Only Data Points Available

The following information is unlocked with a free account:

Estimated Production Year, Run Quantity, Grade/Model Run, Grade/Model Total Production, Variant Est. Production, Jewel Material, Jewel Setting, Finish Pattern, Regulator Type, Hairspring, Standard Dial Type, U.S. Patents, Dial Feet Locations, Movement Markings

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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.


cjbrem Supporter 1073 · May 7, 2025

Serial Number 940515 was reported as accurate.

Anonymous · October 6, 2024

Serial Number 940466 was reported as accurate.

Anonymous · May 21, 2024

Serial Number 940650 was reported as accurate.

PHIL1199 Supporter 1251 · February 25, 2024

Serial Number 941527 was reported as accurate.

Anonymous · March 10, 2022

Serial Number 941004 was reported as accurate.

Anonymous · June 13, 2021

Serial Number 940878 was reported as accurate.

Anonymous · May 31, 2021

Serial Number 940578 was reported as accurate.

Anonymous · September 25, 2020

Serial Number 941291 was reported as accurate.

Anonymous · September 25, 2020

Serial Number 941291 was reported as accurate.

Anonymous · September 2, 2020

Serial Number 941568 was reported as accurate.

Anonymous · April 9, 2020

Serial Number 940209 was reported as accurate.

Anonymous · January 3, 2020

Serial Number 940975 was reported as accurate.

Anonymous · December 9, 2019

Serial Number 941054 was reported as accurate.

Milo18 Supporter 7 · November 7, 2019

Serial Number 941282 was reported as accurate.

Anonymous · June 6, 2019

Serial Number 940633 was reported as accurate.

Anonymous · May 29, 2019

Serial Number 940484 was reported as accurate.

Anonymous · March 30, 2019

Serial Number 940544 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch
E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch