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: 1179987
Grade: Series 7
Model: 1912
Estimated Production Year: 1912
Run Quantity: 7,200
Grade/Model Total Production: 172,700
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
Registry Population: 7 (0.10%)
Database Version: v49.708

Production Metrics Tree: Grade Series 7

Target Profile: 12S-M1912-17J-ONP-A3PT

E. Howard Watch Co. (Keystone) Grade Series 7 (All Variations): 224,550 ETP
12S: 224,550 100.00%
12s, Grade Series 7
12S-M1912: 172,700 76.91%
12s, Grade Series 7, Model 1912
Other: 51,850
Other Models or Unclassified
12S-M1912-17J: 172,700 76.91%
12s, Grade Series 7, Model 1912, 17 Jewels
12S-M1912-17J-ONP: 172,700 76.91%
12s, Grade Series 7, Model 1912, 17 Jewels, Openface/Pendant/Nickel
12S-M1912-17J-ONP-A3PT: 172,700 76.91%

Population Registry for This Run

Image Serial Number Run Position Primary Identification Method Discovery Date
1 1173317 #517 Collection June 01, 2022
2 1175003 #2203 Collection March 23, 2017
3 1175784 #2984 Collection February 19, 2014
4 1178351 #5551 Collection January 26, 2020
5
Image Credit: okiejohn
1178487 #5687 Collection February 02, 2020
6
Image Credit: Mogman50
1179756 #6956 Collection March 29, 2020
7
Image Credit: abmimoso
1179987 #7187 Collection April 12, 2015
Standard Deviation of Known Examples: 2,555.37 (Expected: 2,078.61, Δ476.77/6.62%)

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.


Anonymous · November 11, 2022

Serial Number 1172810 was reported as inaccurate.

No further details were submitted with the report.

Anonymous · October 7, 2022

Serial Number 1173362 was reported as accurate.

mcopper 54 · July 22, 2021

Serial Number 1179246 was reported as accurate.

mcopper 54 · July 14, 2021

Serial Number 1179187 was reported as accurate.

ebsrods Supporter 61 · July 3, 2021

Serial Number 1179187 was reported as accurate.

Anonymous · February 23, 2021

Serial Number 1176620 was reported as accurate.

Anonymous · January 16, 2021

Serial Number 1179572 was reported as accurate.

2mnyboxers Supporter 331 · September 18, 2020

Serial Number 1178711 was reported as accurate.

Anonymous · August 31, 2020

Serial Number 1178689 was reported as accurate.

bunnofnickle 67 · July 1, 2020

Serial Number 1172903 was reported as inaccurate.

Note: Mine is 23 jewel adjusted 5 position in a 18K case
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.

Anonymous · March 7, 2020

Serial Number 1174264 was reported as accurate.

Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface

okiejohn 310 · February 6, 2020

Serial Number 1178487 was reported as accurate.

Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface

Harlton Supporter 98 · January 26, 2020

Serial Number 1178351 was reported as accurate.

Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface

Snapper Supporter 98 · January 5, 2020

Serial Number 1175413 was reported as accurate.

Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface

Anonymous · January 1, 2020

Serial Number 1176722 was reported as accurate.

Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface

Anonymous · July 27, 2019

Serial Number 1174047 was reported as accurate.

Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface
Plate changed from 3/4 to Bridge

Anonymous · May 18, 2019

Serial Number 1175571 was reported as accurate.

Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface
Plate changed from 3/4 to Bridge

Anonymous · May 5, 2019

Serial Number 1176145 was reported as accurate.

Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface
Plate changed from 3/4 to Bridge

bubba70 543 · January 4, 2019

Serial Number 1176279 was reported as accurate.

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