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: 1273267
Grade: Series 7
Model: 1912
Estimated Production Year: 1914
Run Quantity: 11,000
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
Barrel: Going
Hairspring: Breguet
Adjusted: Yes
Adjusted # of Positions: 3
Adjusted to Temperature: Yes
Railroad Grade: No
Case: Various
Registry Population: 9 (0.08%)
Database Version: v49.701

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
Image Credit: brokenbob09
1268151 #1151 Collection January 30, 2019
2
Image Credit: billkov
1268386 #1386 Collection September 08, 2020
3 1269391 #2391 Collection December 17, 2022
4 1270000 #3000 Collection October 29, 2017
5 1270550 #3550 Collection March 09, 2018
6
Image Credit: halazPW
1273267 #6267 Collection January 21, 2017
7 1276236 #9236 Collection September 05, 2022
8 1276262 #9262 Collection April 23, 2015
9 1277108 #10108 Collection July 31, 2018
Standard Deviation of Known Examples: 3,612.27 (Expected: 3,175.57, Δ436.69/3.97%)

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 · December 2, 2022

Serial Number 1274239 was reported as accurate.

Anonymous · September 19, 2022

Serial Number 1271666 was reported as accurate.

phantacc Supporter 41 · August 19, 2022

Serial Number 1275012 was reported as accurate.

Anonymous · May 11, 2022

Serial Number 1268880 was reported as accurate.

Anonymous · June 30, 2021

Serial Number 1267020 was reported as inaccurate.

Note: the watch is a hunter-case, not open-faced
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.

Anonymous · June 4, 2021

Serial Number 1272110 was reported as accurate.

Anonymous · May 25, 2021

Serial Number 1270822 was reported as accurate.

Anonymous · May 8, 2021

Serial Number 1269376 was reported as accurate.

Anonymous · May 4, 2021

Serial Number 1269376 was reported as accurate.

Anonymous · April 12, 2021

Serial Number 1277192 was reported as accurate.

Anonymous · March 25, 2021

Serial Number 1277967 was reported as accurate.

Anonymous · March 6, 2021

Serial Number 1277967 was reported as accurate.

Anonymous · March 2, 2021

Serial Number 1267813 was reported as inaccurate.

Note: hunting
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.

Anonymous · December 14, 2020

Serial Number 1272410 was reported as accurate.

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

billkov 97 · December 13, 2020

Serial Number 1268386 was reported as accurate.

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

Anonymous · September 15, 2020

Serial Number 1276252 was reported as accurate.

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

Anonymous · September 5, 2020

Serial Number 1273612 was reported as accurate.

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

cmdraven 3539 · August 9, 2020

Serial Number 1273062 was reported as accurate.

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

pmtime 314 · August 5, 2020

Serial Number 1275041 was reported as accurate.

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

Anonymous · July 26, 2020

Serial Number 1275809 was reported as accurate.

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

Anonymous · July 14, 2020

Serial Number 1274162 was reported as accurate.

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

Anonymous · June 26, 2020

Serial Number 1276772 was reported as accurate.

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

Anonymous · June 3, 2020

Serial Number 1270163 was reported as accurate.

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

arisandino 14 · May 21, 2020

Serial Number 1272020 was reported as accurate.

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

Anonymous · May 19, 2020

Serial Number 1274162 was reported as accurate.

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

Rcardkidz 2782 · May 5, 2020

Serial Number 1269890 was reported as accurate.

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

Anonymous · April 24, 2020

Serial Number 1277967 was reported as accurate.

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

Anonymous · January 9, 2020

Serial Number 1274802 was reported as accurate.

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

Anonymous · November 1, 2019

Serial Number 1272054 was reported as accurate.

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

Anonymous · October 24, 2019

Serial Number 1274162 was reported as accurate.

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

Anonymous · October 22, 2019

Serial Number 1274801 was reported as accurate.

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

Anonymous · September 23, 2019

Serial Number 1271393 was reported as accurate.

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

Anonymous · August 18, 2019

Serial Number 1273062 was reported as accurate.

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

Anonymous · August 4, 2019

Serial Number 1274511 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 · June 13, 2019

Serial Number 1275845 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 15, 2019

Serial Number 1270988 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 · April 10, 2019

Serial Number 1277251 was reported as accurate.

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

Anonymous · January 18, 2019

Serial Number 1277811 was reported as accurate.

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

Anonymous · January 14, 2019

Serial Number 1271344 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Movement Configuration changed from Openface or Hunting to Openface
Plate changed from 3/4 to Bridge

Anonymous · January 2, 2019

Serial Number 1269233 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 · November 29, 2018

Serial Number 1269092 was reported as inaccurate.

No further details were submitted with the report.
Changes since this report was submitted:
Plate changed from 3/4 to Bridge
E. Howard Watch Co. (Keystone) Grade Series 7 Pocket Watch