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: 1371681
Grade: Series 7
Variation: Arrow and Empty Circle
Model: 1912
Estimated Production Year: 1919
Run Quantity: 11,000
Grade/Model Run: 15 of 19
Grade/Model Total Production: 179,100
Variant Est. Production: 67,000 (12S-M1912-17J-ONP-A3PT-ARROW AND EMPTY CIRCLE)
Size: 12s
Jewels: 17j
Movement Configuration: Openface
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
Run ID: 315.G36.12S79.121912M34.O206.P202.17J139
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
380.25
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
1,271.17
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
24.579%
Registry Population: 15 (0.14%)
$ Estimated Value (12 Month Change): 2.16% Analyzing 454 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.


phantacc Supporter 66 · July 31, 2023

Serial Number 1363323 was reported as accurate.

Fifty50 Supporter 317 · May 21, 2023

Serial Number 1369052 was reported as accurate.

Anonymous · November 15, 2022

Serial Number 1368831 was reported as accurate.

Anonymous · June 21, 2022

Serial Number 1365429 was reported as accurate.

Anonymous · December 25, 2021

Serial Number 1372227 was reported as accurate.

pmtime Supporter 400 · November 30, 2021

Serial Number 1365451 was reported as accurate.

Anonymous · November 17, 2021

Serial Number 1366044 was reported as accurate.

Anonymous · September 11, 2021

Serial Number 1365226 was reported as accurate.

Anonymous · May 25, 2021

Serial Number 1364073 was reported as accurate.

Anonymous · May 25, 2021

Serial Number 1364073 was reported as accurate.

Anonymous · May 25, 2021

Serial Number 1364073 was reported as accurate.

Anonymous · January 16, 2021

Serial Number 1370446 was reported as accurate.

Anonymous · December 12, 2020

Serial Number 1366085 was reported as accurate.

Anonymous · December 12, 2020

Serial Number 1366085 was reported as accurate.

Anonymous · October 7, 2020

Serial Number 1370843 was reported as accurate.

Anonymous · August 1, 2020

Serial Number 1365887 was reported as accurate.

Anonymous · July 10, 2020

Serial Number 1365887 was reported as accurate.

Anonymous · December 29, 2019

Serial Number 1373032 was reported as accurate.

Anonymous · November 24, 2019

Serial Number 1373569 was reported as accurate.

Anonymous · September 4, 2019

Serial Number 1370000 was reported as accurate.

Anonymous · July 29, 2019

Serial Number 1367502 was reported as accurate.

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

Anonymous · July 27, 2019

Serial Number 1373130 was reported as accurate.

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

Anonymous · June 26, 2019

Serial Number 1365010 was reported as accurate.

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

Anonymous · May 17, 2019

Serial Number 1372880 was reported as accurate.

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

darkstar 247 · May 13, 2019

Serial Number 1371384 was reported as accurate.

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

Anonymous · May 4, 2019

Serial Number 1372036 was reported as accurate.

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

Anonymous · March 13, 2019

Serial Number 1370389 was reported as accurate.

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

pmtime Supporter 400 · March 6, 2019

Serial Number 1363866 was reported as inaccurate.

Note: This serial # is a 12S 17J series 7 with bridge
mvt, adj. to 3p
Curator Response: Thanks for the report and images. The database has been updated accordingly.
Changes since this report was submitted:
Grade changed from ? to Series 7

Anonymous · December 31, 2018

Serial Number 1364793 was reported as accurate.

Changes since this report was submitted:
Grade changed from ? to Series 7

Anonymous · December 15, 2018

Serial Number 1365273 was reported as accurate.

Changes since this report was submitted:
Grade changed from ? to Series 7

Anonymous · November 28, 2018

Serial Number 1372411 was reported as accurate.

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

Anonymous · November 7, 2018

Serial Number 1367889 was reported as accurate.

Changes since this report was submitted:
Grade changed from ? to Series 7

Anonymous · October 24, 2018

Serial Number 1366000 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Grade changed from ? to Series 7

Anonymous · October 13, 2018

Serial Number 1371681 was reported as accurate.

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