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: 1350466
Grade: Series 7
Model: 1912
Estimated Production Year: 1918
Run Quantity: 39,500
Grade/Model Run: 16 of 21
Grade/Model Total Production: 182,400
Size: 12s
Jewels: 17j
Jewel Setting: Burnished Jewels
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Pendant
Plate: Bridge Plate
Double Roller: Yes
Regulator: Micrometric
Hairspring: Breguet
Adjusted: Yes
Adjusted # of Positions: 3
Adjusted to Temperature: Yes
Railroad Grade: No
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
17 Jewels
[Empty Cirlce in Arrow]
Adjustment
Temperature
3 Pos.
Pat'd '12
Case: Various
Run ID: 316.G37.12S81.121912M36.O228.P219.17J144
Database Version: v52.407
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
548.86
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
1,931.04
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
34.889%
Registry Population:
Scoped for This Run Only
72 (0.18%)
$ Estimated Value (12 Month Change): 0.68% Analyzing 468 Sales

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.


jnickell Supporter 21 · October 10, 2024

Serial Number 1326699 was reported as accurate.

Anonymous · August 9, 2024

Serial Number 1330232 was reported as accurate.

cjbrem Supporter 811 · May 19, 2024

Serial Number 1343472 was reported as accurate.

Anonymous · March 25, 2024

Serial Number 1335909 was reported as accurate.

DisprBJR Supporter 15 · January 14, 2024

Serial Number 1336669 was reported as accurate.

MoatsJustin1 top-contributor 5171 · December 7, 2023

Serial Number 1328625 was reported as accurate.

MoatsJustin1 top-contributor 5171 · November 16, 2023

Serial Number 1348315 was reported as accurate.

MoatsJustin1 top-contributor 5171 · November 16, 2023

Serial Number 1338978 was reported as accurate.

phantacc Supporter 66 · August 14, 2023

Serial Number 1324885 was reported as accurate.

JointVenture Supporter 128 · August 5, 2023

Serial Number 1332940 was reported as accurate.

Anonymous · June 11, 2023

Serial Number 1352925 was reported as accurate.

Anonymous · July 8, 2022

Serial Number 1347430 was reported as accurate.

Anonymous · June 27, 2022

Serial Number 1359355 was reported as accurate.

23Greenwich Supporter 242 · June 9, 2022

Serial Number 1332435 was reported as accurate.

serenityphoto 1 · May 31, 2022

Serial Number 1328664 was reported as accurate.

Anonymous · May 13, 2022

Serial Number 1359068 was reported as accurate.

Anonymous · April 27, 2022

Serial Number 1324868 was reported as accurate.

Anonymous · February 15, 2022

Serial Number 1344451 was reported as inaccurate.

Note: Is mostly accurate but my watch has stop work on
the ratchet wheel
Curator Response: Thanks for the report. Based on the serial number, I suspect your wheel is not original to the movement.

LuftTigger Supporter 18 · February 10, 2022

Serial Number 1358990 was reported as accurate.

Anonymous · January 24, 2022

Serial Number 1338836 was reported as accurate.

Rcardkidz 3970 · January 20, 2022

Serial Number 1359578 was reported as accurate.

falloutfan576 1 · December 10, 2021

Serial Number 1328310 was reported as accurate.

Anonymous · November 23, 2021

Serial Number 1350669 was reported as accurate.

Anonymous · November 13, 2021

Serial Number 1351217 was reported as accurate.

Rcardkidz 3970 · November 1, 2021

Serial Number 1324227 was reported as accurate.

Anonymous · October 25, 2021

Serial Number 1348604 was reported as accurate.

Anonymous · October 15, 2021

Serial Number 1326744 was reported as accurate.

Anonymous · October 7, 2021

Serial Number 1326744 was reported as accurate.

Anonymous · August 22, 2021

Serial Number 1347475 was reported as accurate.

Cpmeadors Supporter 36 · July 10, 2021

Serial Number 1352760 was reported as accurate.

Anonymous · June 20, 2021

Serial Number 1335675 was reported as accurate.

Watchout208 1 · June 20, 2021

Serial Number 1345122 was reported as accurate.

Anonymous · June 20, 2021

Serial Number 1345122 was reported as accurate.

brianwatches 53 · June 5, 2021

Serial Number 1328367 was reported as accurate.

Anonymous · June 4, 2021

Serial Number 1346910 was reported as accurate.

Anonymous · May 10, 2021

Serial Number 1354269 was reported as accurate.

Anonymous · May 10, 2021

Serial Number 1353798 was reported as accurate.

Anonymous · March 14, 2021

Serial Number 1359070 was reported as accurate.

Anonymous · March 14, 2021

Serial Number 1359070 was reported as accurate.

Anonymous · March 14, 2021

Serial Number 1359070 was reported as accurate.

Silvercloud 183 · February 18, 2021

Serial Number 1330224 was reported as accurate.

lee571 Supporter 78 · February 10, 2021

Serial Number 1359978 was reported as accurate.

Anonymous · February 1, 2021

Serial Number 1349363 was reported as accurate.

Anonymous · January 20, 2021

Serial Number 1339281 was reported as accurate.

Anonymous · January 14, 2021

Serial Number 1324952 was reported as accurate.

lee571 Supporter 78 · December 12, 2020

Serial Number 1341748 was reported as accurate.

Anonymous · October 24, 2020

Serial Number 1349706 was reported as accurate.

Dutchcollecter 15 · October 22, 2020

Serial Number 1354456 was reported as accurate.

Anonymous · October 16, 2020

Serial Number 1329355 was reported as accurate.

Anonymous · October 9, 2020

Serial Number 1354892 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 7 Pocket Watch