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 9 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 9

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 1124817 Question Mark
Grade: Series 9 Question Mark
Model: 1905 Question Mark
Estimated Production Year: 1912 Question Mark
Run Quantity: 3,000 Question Mark
Grade/Model Run: 10 of 14 Question Mark
Grade/Model Total Production: 15,610 Question Mark
Variant Est. Production: 10,500 (16S-M1905-17J-ONP) Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Setting: Gold Settings (Screw-Set) Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Checkerboard Question Mark
Movement Setting: Pendant Question Mark
Plate: 3/4 Plate Question Mark
Double Roller: Yes Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted # of Positions: 3 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: No 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: 228.G10.16S153.161905M94.O150.P168.17J119 Question Mark
Database Version: v52.529 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
34.62 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
121.72 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.199% Question Mark
Registry Population:
Scoped for This Run Only
73 (2.43%) Question Mark
Research Note: #1125911: Reported as Lever-Set.

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 · November 23, 2024

Serial Number 1125911 was reported as inaccurate.

Note: The watch is lever set, not pendant.

Anonymous · November 12, 2024

Serial Number 1126011 was reported as accurate.

PHIL1199 Supporter 1164 · November 3, 2023

Serial Number 1124410 was reported as accurate.

Anonymous · March 9, 2022

Serial Number 1123621 was reported as accurate.

Anonymous · December 25, 2021

Serial Number 1126197 was reported as accurate.

NumbatNinja Supporter 48 · June 8, 2021

Serial Number 1125852 was reported as accurate.

Anonymous · May 11, 2021

Serial Number 1124392 was reported as accurate.

Anonymous · May 7, 2021

Serial Number 1125864 was reported as accurate.

Anonymous · March 15, 2021

Serial Number 1125509 was reported as accurate.

Anonymous · August 23, 2020

Serial Number 1124720 was reported as accurate.

Gkbuds 3 · August 15, 2020

Serial Number 1124539 was reported as accurate.

Gkbuds 3 · August 14, 2020

Serial Number 1124539 was reported as accurate.

Anonymous · August 12, 2020

Serial Number 1124370 was reported as accurate.

Anonymous · December 27, 2019

Serial Number 1125321 was reported as accurate.

Anonymous · September 17, 2019

Serial Number 1124409 was reported as accurate.

WLBelkriver33 804 · February 23, 2019

Serial Number 1124923 was reported as accurate.

Anonymous · October 7, 2018

Serial Number 1123918 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 9 Pocket Watch