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

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 932573 Question Mark
Grade: Series 3 Question Mark
Model: 1905 Question Mark
Estimated Production Year: Login to View Question Mark
Run Quantity: Login to View Question Mark
Grade/Model Run: Login to View Question Mark
Grade/Model Total Production: Login to View Question Mark
Variant Est. Production: Login to View Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Material: Login to View Question Mark
Jewel Setting: Login to View Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Login to View Question Mark
Movement Setting: Pendant Question Mark
Wind Mechanism: Pendant Question Mark
Plate: 3/4 Plate Question Mark
Regulator: Login to View Question Mark
Hairspring: Login to View Question Mark
Pallet Jewel Material: Sapphire Question Mark
Standard Dial Type: Login to View Question Mark
Adjusted: Login to View Question Mark
Adjusted to Position: Login to View Question Mark
Adjusted # of Positions: Login to View Question Mark
Adjusted to Temperature: Login to View Question Mark
Adjusted to Isochronism: Login to View Question Mark
U.S. Patents: Login to View Question Mark
Dial Feet Locations: Login to View Question Mark
Movement Markings: Login to View
Case: Various Question Mark
Run ID: 60.G24.16S35.161905M34.H16.P50.17J38 Question Mark
Database Version: v52.642 Question Mark
Advanced Metrics
Members Only Data. Login or create a free account to unlock.
Registry Population:
Scoped for This Run Only
21 (2.10%) Question Mark
19 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, Adjustments, Adjusted to Position, Positional Adjustments, Temperature Adjustments, Isochronism Adjustments, 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.


Anonymous · January 27, 2023

Serial Number 932099 was reported as accurate.

Anonymous · June 3, 2020

Serial Number 932992 was reported as accurate.

Anonymous · November 9, 2018

Serial Number 932991 was reported as accurate.

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