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: 1264187
Grade: Series 11
Model: E
Estimated Production Year: 1914
Run Quantity: 5,000
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
Case: Various
Database Version: v48.258
Research Note: #1260675: Reported with Single Roller

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

1260001
Verification Serial Map
1265000

Anonymous · July 28, 2022

Serial Number 1263748 was reported as accurate.

Blicquer Supporter 41 · July 10, 2022

Serial Number 1263650 was reported as accurate.

Anonymous · March 25, 2022

Serial Number 1263662 was reported as accurate.

Anonymous · November 3, 2021

Serial Number 1262835 was reported as accurate.

10mikemikes 25 · July 6, 2021

Serial Number 1261382 was reported as accurate.

Anonymous · June 11, 2021

Serial Number 1260042 was reported as accurate.

rmwatchandclock Supporter 253 · June 2, 2021

Serial Number 1263349 was reported as accurate.

Anonymous · April 14, 2021

Serial Number 1260644 was reported as inaccurate.

Note: My E Howard railroad chronometer pocket watch is
made in Boston .Everything else seems the same,21
jewels,5 temp adjustments,series 11. Has Name
engraved in case G.W.Cook 1920
Curator Response: Thanks for the report. While the movement is marked "Boston," the E. Howard factory was located in Waltham, Massachusetts.

Anonymous · April 12, 2021

Serial Number 1264727 was reported as accurate.

bubba70 543 · January 2, 2021

Serial Number 1263629 was reported as accurate.

Anonymous · July 29, 2020

Serial Number 1261836 was reported as accurate.

Anonymous · June 20, 2020

Serial Number 1262767 was reported as accurate.

Anonymous · June 16, 2020

Serial Number 1263244 was reported as accurate.

Wghutchens Supporter 4 · February 9, 2020

Serial Number 1264187 was reported as accurate.

Anonymous · September 12, 2019

Serial Number 1260138 was reported as accurate.

Anonymous · August 31, 2019

Serial Number 1264824 was reported as accurate.

Anonymous · August 27, 2019

Serial Number 1264824 was reported as accurate.

Anonymous · July 7, 2019

Serial Number 1262432 was reported as accurate.

Anonymous · July 3, 2019

Serial Number 1262088 was reported as accurate.

Anonymous · April 15, 2019

Serial Number 1261565 was reported as accurate.

WLBelkriver33 804 · March 16, 2019

Serial Number 1263585 was reported as accurate.

Anonymous · February 21, 2019

Serial Number 1260313 was reported as accurate.

Anonymous · December 31, 2018

Serial Number 1261943 was reported as accurate.

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