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: 1268151
Grade: Series 7
Model: 1912
Estimated Production Year: 1914
Run Quantity: 11,000
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: 8 (0.07%)
Database Version: v49.391

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 1268151 #1151 Collection January 30, 2019
2 1268386 #1386 Collection September 08, 2020
3 1270000 #3000 Collection October 29, 2017
4 1270550 #3550 Collection March 09, 2018
5 1273267 #6267 Collection January 21, 2017
6 1276236 #9236 Collection September 05, 2022
7 1276262 #9262 Collection April 23, 2015
8 1277108 #10108 Collection July 31, 2018
Standard Deviation of Known Examples: 3,699.87 (Expected: 3,175.57, Δ524.30/4.77%)

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

1267001
Verification Serial Map
1278000

Anonymous · September 19, 2022

Serial Number 1271666 was reported as accurate.

phantacc Supporter 40 · 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 3502 · 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 307 · 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 2743 · 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