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 11 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 11

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1182991
Grade: Series 11
Model: E
Estimated Production Year: 1912
Run Quantity: 6,000
Total Production: 25,100
Size: 16s
Jewels: 21j
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: Bridge Plate
Double Roller: Yes
Hairspring: Breguet
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Railroad Grade Classification: Class A
Database Version: v47.183

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Data Verification Reports

1181001
Verification Serial Map
1187000

Anonymous · October 5, 2021

Serial Number 1186895 was reported as accurate.

Anonymous · August 12, 2021

Serial Number 1185272 was reported as accurate.

WatchFan63 Supporter 4 · May 19, 2021

Serial Number 1185385 was reported as accurate.

Anonymous · May 5, 2021

Serial Number 1185040 was reported as accurate.

Anonymous · May 2, 2021

Serial Number 1181808 was reported as accurate.

Anonymous · April 25, 2021

Serial Number 1183569 was reported as accurate.

Anonymous · April 18, 2021

Serial Number 1181808 was reported as accurate.

Anonymous · February 21, 2021

Serial Number 1181292 was reported as accurate.

Anonymous · February 5, 2021

Serial Number 1183744 was reported as accurate.

Automatic 254 · November 18, 2020

Serial Number 1182963 was reported as accurate.

rmwatchandclock 199 · November 9, 2020

Serial Number 1184728 was reported as accurate.

bwcrtime 178 · October 15, 2020

Serial Number 1184230 was reported as accurate.

bwcrtime 178 · October 15, 2020

Serial Number 1184230 was reported as accurate.

bunnofnickle 67 · July 2, 2020

Serial Number 1181768 was reported as accurate.

SharpByCoop 1 · April 26, 2020

Serial Number 1182598 was reported as accurate.

Anonymous · March 5, 2020

Serial Number 1185999 was reported as accurate.

Anonymous · February 26, 2020

Serial Number 1183247 was reported as accurate.

TimPsaledakis Supporter 25 · July 30, 2019

Serial Number 1182983 was reported as accurate.

Anonymous · July 6, 2019

Serial Number 1186673 was reported as accurate.

Anonymous · March 19, 2019

Serial Number 1183516 was reported as accurate.

jlwint22 22 · December 15, 2018

Serial Number 1184196 was reported as accurate.

Anonymous · November 30, 2018

Serial Number 1186912 was reported as accurate.

Anonymous · November 29, 2018

Serial Number 1186912 was reported as accurate.

Anonymous · November 28, 2018

Serial Number 1186912 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 11 Pocket Watch