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 2 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 2

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 1117938 Question Mark
Grade: Series 2 Question Mark
Model: 1907 Question Mark
Estimated Production Year: 1911 Question Mark
Run Quantity: 2,500 Question Mark
Grade/Model Run: 2 of 6 Question Mark
Grade/Model Total Production: 6,500 Question Mark
Variant Est. Production: 4,000 (16S-M1907-17J-ONL) Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Jewel Setting: Burnished Jewels Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: Center Question Mark
Double Roller: Yes Question Mark
Barrel: Going Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Pallet Jewel Material: Sapphire Question Mark
Standard Dial Type: Double-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 5 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: Yes Question Mark
Dial Feet Locations: 10.7, 24.3, 48.9 Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Series 2
17 Jewels
[Empty Circle in Arrow]
Pat'd. '08
Adjustment
Five Positions
Temperature
Case: Various Question Mark
Run ID: 219.G14.16S151.161907M51.O141.L37.17J117 Question Mark
Database Version: v52.528 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
16.56 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
58.16 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
1.052% Question Mark
Registry Population:
Scoped for This Run Only
6 (0.24%) Question Mark

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 19, 2024

Serial Number 1118515 was reported as inaccurate.

Note: PENDANT SET

Faberius Supporter 6 · July 19, 2024

Serial Number 1117456 was reported as inaccurate.

No further details were submitted with the report.

MoatsJustin1 top-contributor 5272 · November 16, 2023

Serial Number 1118870 was reported as accurate.

Anonymous · January 28, 2023

Serial Number 1118021 was reported as accurate.

Anonymous · August 24, 2022

Serial Number 1117014 was reported as accurate.

Anonymous · March 10, 2022

Serial Number 1118800 was reported as accurate.

sanderson 35 · March 30, 2021

Serial Number 1117797 was reported as accurate.

Anonymous · February 5, 2021

Serial Number 1117371 was reported as accurate.

Anonymous · September 15, 2020

Serial Number 1119097 was reported as inaccurate.

Note: Watch is marked Series 2 and is 17 jewels.
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
Changes since this report was submitted:
Grade changed from Series 8 to Series 2
Size changed from 12 to 16
Jewels changed from 21j to 17j
Factory Model changed from 1908 to 1907
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · April 28, 2020

Serial Number 1117333 was reported as accurate.

texnet 684 · November 12, 2019

Serial Number 1117263 was reported as accurate.

Anonymous · October 13, 2019

Serial Number 1117720 was reported as accurate.

Anonymous · February 1, 2019

Serial Number 1118399 was reported as accurate.

Anonymous · January 11, 2019

Serial Number 1117303 was reported as accurate.

2229273 1 · November 27, 2018

Serial Number 1117920 was reported as inaccurate.

Note: This watch is lever set not pendant set.
Changes since this report was submitted:
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes
E. Howard Watch Co. (Keystone) Grade Series 2 Pocket Watch