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: 1300431
Grade: Series 7
Model: 1912
Estimated Production Year: 1915
Run Quantity: 14,000
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: v48.496

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Data Verification Reports

1290001
Verification Serial Map
1304000

Anonymous · September 21, 2022

Serial Number 1300405 was reported as accurate.

Anonymous · August 23, 2022

Serial Number 1290726 was reported as accurate.

Anonymous · May 1, 2022

Serial Number 1300001 was reported as accurate.

mcopper 54 · April 8, 2022

Serial Number 1297817 was reported as accurate.

Anonymous · December 28, 2021

Serial Number 1298924 was reported as accurate.

Anonymous · November 17, 2021

Serial Number 1301235 was reported as accurate.

Anonymous · September 16, 2021

Serial Number 1295730 was reported as accurate.

Anonymous · July 9, 2021

Serial Number 1293774 was reported as accurate.

Anonymous · May 23, 2021

Serial Number 1290624 was reported as accurate.

Anonymous · May 2, 2021

Serial Number 1301022 was reported as accurate.

petersas 14 · April 13, 2021

Serial Number 1301483 was reported as accurate.

Anonymous · April 1, 2021

Serial Number 1302179 was reported as accurate.

Anonymous · January 21, 2021

Serial Number 1291559 was reported as accurate.

bananajoe 4 · December 22, 2020

Serial Number 1293885 was reported as accurate.

Anonymous · November 7, 2020

Serial Number 1292425 was reported as accurate.

Anonymous · November 4, 2020

Serial Number 1297703 was reported as inaccurate.

Note: Size 14s
Curator Response: Thanks for the report. These watches were advertised and sold as 12-Size even though the dial plate measures closer to 14-Size.

Anonymous · September 28, 2020

Serial Number 1296140 was reported as accurate.

Anonymous · September 19, 2020

Serial Number 1302955 was reported as accurate.

Bostonwatch 59 · September 4, 2020

Serial Number 1292159 was reported as accurate.

MoatsJustin1 2501 · August 15, 2020

Serial Number 1301658 was reported as accurate.

texnet Supporter 684 · July 23, 2020

Serial Number 1302623 was reported as accurate.

Anonymous · July 10, 2020

Serial Number 1293258 was reported as accurate.

Anonymous · July 9, 2020

Serial Number 1297375 was reported as accurate.

Anonymous · May 24, 2020

Serial Number 1296736 was reported as accurate.

jmfoss03 33 · May 9, 2020

Serial Number 1292676 was reported as accurate.

windupthings 24 · April 10, 2020

Serial Number 1302623 was reported as accurate.

Anonymous · April 1, 2020

Serial Number 1293885 was reported as accurate.

Anonymous · March 6, 2020

Serial Number 1302623 was reported as accurate.

Anonymous · March 5, 2020

Serial Number 1300797 was reported as accurate.

Anonymous · March 1, 2020

Serial Number 1294979 was reported as accurate.

Anonymous · December 24, 2019

Serial Number 1295562 was reported as accurate.

Anonymous · August 27, 2019

Serial Number 1293653 was reported as accurate.

Anonymous · August 21, 2019

Serial Number 1293408 was reported as accurate.

Anonymous · August 8, 2019

Serial Number 1301235 was reported as accurate.

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

texnet Supporter 684 · July 20, 2019

Serial Number 1300123 was reported as accurate.

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

Kevin H 84 · June 15, 2019

Serial Number 1290391 was reported as accurate.

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

AlbuquerqueCoins Supporter 4 · June 15, 2019

Serial Number 1296156 was reported as accurate.

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

Anonymous · May 5, 2019

Serial Number 1299991 was reported as accurate.

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

Anonymous · February 7, 2019

Serial Number 1297117 was reported as accurate.

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

Anonymous · January 29, 2019

Serial Number 1296876 was reported as accurate.

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

Anonymous · November 13, 2018

Serial Number 1298436 was reported as accurate.

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