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 7 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 7

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1221676
Grade: Series 7
Model: 1912
Estimated Production Year: 1913
Run Quantity: 10,000
Total Production: 172,700
Size: 12s
Jewels: 17j
Movement Configuration: Openface or Hunting
Movement Finish: Nickel
Movement Setting: Pendant
Plate: Bridge Plate
Double Roller: Yes
Hairspring: Breguet
Adjusted: Yes
Adjusted # of Positions: 3
Adjusted to Temperature: Yes
Railroad Grade: No
Case: Various
Database Version: v48.489

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Data Verification Reports

1220001
Verification Serial Map
1230000

Anonymous · July 21, 2022

Serial Number 1221870 was reported as accurate.

Anonymous · April 20, 2022

Serial Number 1224225 was reported as accurate.

Anonymous · March 27, 2022

Serial Number 1225525 was reported as accurate.

Anonymous · October 7, 2021

Serial Number 1222929 was reported as accurate.

Anonymous · September 6, 2021

Serial Number 1220845 was reported as accurate.

Anonymous · June 4, 2021

Serial Number 1229662 was reported as accurate.

Anonymous · May 31, 2021

Serial Number 1227564 was reported as accurate.

Anonymous · February 21, 2021

Serial Number 1228480 was reported as accurate.

Anonymous · December 31, 2020

Serial Number 1229937 was reported as accurate.

lee571 Supporter 65 · December 14, 2020

Serial Number 1227676 was reported as accurate.

lee571 Supporter 65 · December 14, 2020

Serial Number 1227676 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · August 14, 2020

Serial Number 1227395 was reported as accurate.

Rcardkidz 2698 · May 5, 2020

Serial Number 1227104 was reported as accurate.

Anonymous · April 18, 2020

Serial Number 1220322 was reported as accurate.

hudnic Supporter 67 · March 6, 2020

Serial Number 1229426 was reported as accurate.

Anonymous · February 20, 2020

Serial Number 1227932 was reported as accurate.

Anonymous · February 2, 2020

Serial Number 1227377 was reported as accurate.

Anonymous · January 20, 2020

Serial Number 1220738 was reported as accurate.

Anonymous · November 5, 2019

Serial Number 1227564 was reported as inaccurate.

Note: measured out to 14s

Anonymous · September 7, 2019

Serial Number 1228236 was reported as accurate.

Anonymous · June 26, 2019

Serial Number 1222929 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · June 24, 2019

Serial Number 1225787 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · June 23, 2019

Serial Number 1223560 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · May 23, 2019

Serial Number 1223029 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · April 19, 2019

Serial Number 1220056 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · March 16, 2019

Serial Number 1224070 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

bubba70 543 · March 10, 2019

Serial Number 1222585 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · February 14, 2019

Serial Number 1221508 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge
E. Howard Watch Co. (Keystone) Grade Series 7 Pocket Watch