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: 1181478
Grade: Series 11
Variation: DR.SpringClick
Model: E
Estimated Production Year: 1913
Run Quantity: 6,000
Grade/Model Run: 1 of 12
Grade/Model Total Production: 25,100
Variant Est. Production: 6,000 (16S-ME-21J-ONL-A5PTI-DR.SPRINGCLICK)
Size: 16s
Jewels: 21j
Jewel Setting: Burnished Jewels
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: Bridge Plate
Double Roller: Yes
Regulator: Micrometric
Hairspring: Breguet
Standard Dial Type: Single-Sunk
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
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Railroad Chronometer
Series 11
21 Jewels
R.R. Adjustment
Temperature
Five Positions
Pat'd '08
Double Roller
Case: Various
Run ID: 266.G1.16S180.M1.O183.L54.21J39
Database Version: v52.406
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
75.57
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
265.78
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
4.804%
Registry Population:
Scoped for This Run Only
26 (0.43%)
$ Estimated Value (12 Month Change): 0.57% Analyzing 201 Sales

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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.


Anonymous · July 2, 2024

Serial Number 1182218 was reported as accurate.

Anonymous · April 7, 2024

Serial Number 1181489 was reported as accurate.

Anonymous · January 5, 2024

Serial Number 1184447 was reported as accurate.

rmwatchandclock Supporter 371 · July 16, 2023

Serial Number 1182855 was reported as accurate.

Anonymous · April 18, 2023

Serial Number 1184086 was reported as accurate.

Anonymous · January 5, 2023

Serial Number 1182218 was reported as accurate.

Anonymous · November 28, 2022

Serial Number 1182218 was reported as accurate.

Anonymous · September 28, 2022

Serial Number 1181407 was reported as accurate.

ebsrods Supporter 123 · August 20, 2022

Serial Number 1181298 was reported as accurate.

ticker32 Supporter 90 · July 31, 2022

Serial Number 1181296 was reported as accurate.

Anonymous · July 1, 2022

Serial Number 1184092 was reported as accurate.

Anonymous · June 2, 2022

Serial Number 1185516 was reported as accurate.

swhite1750 29 · May 15, 2022

Serial Number 1181408 was reported as accurate.

Anonymous · May 14, 2022

Serial Number 1181409 was reported as accurate.

Anonymous · March 21, 2022

Serial Number 1182748 was reported as accurate.

Anonymous · February 27, 2022

Serial Number 1186648 was reported as accurate.

Anonymous · February 14, 2022

Serial Number 1181364 was reported as accurate.

Anonymous · December 21, 2021

Serial Number 1181305 was reported as accurate.

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 Supporter 371 · November 9, 2020

Serial Number 1184728 was reported as accurate.

bwcrtime 189 · October 15, 2020

Serial Number 1184230 was reported as accurate.

bwcrtime 189 · 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 28 · 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