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
Grade/Model Run: 3 of 11
Grade/Model 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
Run ID: 289.G3.16S180.M3.O187.L50.21J44
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
75.15
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
251.15
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
4.858%
Registry Population: 26 (0.52%)
$ Estimated Value (12 Month Change): 3.85% Analyzing 196 Sales
Research Note: #1260675: Reported with Single Roller

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Verification Reports for this Run

The following reports have been graciously submitted by dedicated members in reference to this production run. These reports are useful to verify data and track inaccuracies that require further research. Please note that reports may contain inaccurate information or assumptions that must be dilligently considered with other available sources.


ebsrods Supporter 108 · February 14, 2024

Serial Number 1260620 was reported as accurate.

MoatsJustin1 top-contributor 4691 · December 14, 2023

Serial Number 1264775 was reported as accurate.

Rcardkidz 3398 · April 8, 2023

Serial Number 1262775 was reported as accurate.

Anonymous · January 14, 2023

Serial Number 1262571 was reported as accurate.

cmdraven 3970 · August 16, 2022

Serial Number 1261864 was reported as accurate.

Anonymous · July 28, 2022

Serial Number 1263748 was reported as accurate.

Blicquer Supporter 75 · 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 365 · 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 5 · 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