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: 938298 Question Mark
Grade: Series 3 Question Mark
Model: 1905 Question Mark
Estimated Production Year: 1907 Question Mark
Run Quantity: 2,000 Question Mark
Grade/Model Run: 28 of 39 Question Mark
Grade/Model Total Production: 49,390 Question Mark
Variant Est. Production: 26,840 (16S-M1905-17J-HNP) Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Jewel Setting: Gold Settings (Screw-Set) Question Mark
Movement Configuration: Hunting Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Circular Question Mark
Movement Setting: Pendant Question Mark
Plate: 3/4 Plate Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Pallet Jewel Material: Sapphire Question Mark
Standard Dial Type: Single-Sunk 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
Dial Feet Locations: 10.7, 24.3, 48.9 Question Mark
U.S. Patents: 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Adjusted
17 Jewels
Pat'd. '05
Case: Various Question Mark
Run ID: 69.G28.16S46.161905M45.H19.P60.17J48 Question Mark
Database Version: v52.508 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
80.81 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
284.22 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
5.133% Question Mark
Registry Population:
Scoped for This Run Only
33 (1.65%) Question Mark
$ Estimated Value (12 Month Change): 14.53% Analyzing 194 Sales Question Mark
Research Note: #939671 and #939715: Reported as Openface.

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.


cjbrem Supporter 944 · September 3, 2024

Serial Number 939378 was reported as accurate.

Rcardkidz 4090 · May 12, 2024

Serial Number 939166 was reported as accurate.

rjandladyj 190 · October 30, 2023

Serial Number 939608 was reported as accurate.

Anonymous · June 15, 2021

Serial Number 938011 was reported as accurate.

nicnic Supporter 406 · June 8, 2021

Serial Number 938298 was reported as accurate.

Matticus 14 · June 2, 2021

Serial Number 939323 was reported as accurate.

Anonymous · May 31, 2021

Serial Number 939498 was reported as accurate.

Anonymous · May 6, 2021

Serial Number 939323 was reported as accurate.

Anonymous · May 1, 2020

Serial Number 939037 was reported as accurate.

Anonymous · March 3, 2020

Serial Number 938976 was reported as accurate.

Anonymous · October 15, 2019

Serial Number 938627 was reported as inaccurate.

No further details were submitted with the report.
E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch