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 1 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 1

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1100348
Grade: Series 1
Variation: Arrow and Star
Model: 1907
Estimated Production Year: 1912
Run Quantity: 1,500
Total Production: 5,700
Size: 16s
Jewels: 21j
Jewel Material: Ruby & Sapphire
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Parallel
Movement Inlay Color: Black
Movement Setting: Lever
Plate: Bridge Plate
Bridge Type: Center
Double Roller: Yes
Barrel: Safety
Regulator: Reed
Hairspring: Breguet
Pallet Jewel Material: Sapphire
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Dial Feet Locations: 10.7, 24.3, 48.9
Case: Various
Database Version: v48.293
Research Note: Mixed Run: Marked Either "No. 1" or "No. 10"

Help Us Help Others By Improving the Database:

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Data Verification Reports

1100001
Verification Serial Map
1101500

CJEmpire3 72 · December 2, 2021

Serial Number 1101177 was reported as accurate.

Anonymous · May 2, 2021

Serial Number 1100360 was reported as accurate.

Anonymous · December 11, 2020

Serial Number 1100199 was reported as accurate.

ABUMALEK 97 · April 29, 2020

Serial Number 1100713 was reported as accurate.

Schmidty Supporter 7 · February 10, 2020

Serial Number 1101466 was reported as accurate.

Harlton Supporter 98 · January 27, 2020

Serial Number 1100084 was reported as accurate.

cjbrem Supporter 97 · January 4, 2020

Serial Number 1100329 was reported as accurate.

Anonymous · November 20, 2019

Serial Number 1101088 was reported as accurate.

Anonymous · November 17, 2019

Serial Number 1100426 was reported as accurate.

Anonymous · July 21, 2019

Serial Number 1101077 was reported as accurate.

tink5249 2 · May 25, 2019

Serial Number 1100506 was reported as accurate.

Anonymous · May 22, 2019

Serial Number 1100199 was reported as accurate.

cjbrem Supporter 97 · March 24, 2019

Serial Number 1100329 was reported as accurate.

Anonymous · February 28, 2019

Serial Number 1100506 was reported as accurate.

Anonymous · February 18, 2019

Serial Number 1101108 was reported as inaccurate.

Note: The series 1, 21J, safety barrel movement is a RR
grade movement, It is lever set and adjusted to 5
positions
Curator Response: Thanks for the report. The setting mechanism for this run was previously undetermined. Being lever-set, your watch would absolutely qualify for railroad service.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · January 21, 2019

Serial Number 1100934 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
E. Howard Watch Co. (Keystone) Grade Series 1 Pocket Watch