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: 1162921
Grade: Series 7
Model: 1912
Estimated Production Year: 1912
Run Quantity: 8,000
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: 11 (0.14%)
Database Version: v49.432

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 1162147 #147 Collection July 15, 2019
2 1162277 #277 Collection April 19, 2020
3 1162921 #921 Collection May 20, 2021
4 1163540 #1540 Collection February 19, 2014
5 1163634 #1634 Collection July 21, 2017
6 1165470 #3470 Collection September 28, 2022
7 1165807 #3807 Collection October 13, 2022
8 1168520 #6520 Collection December 01, 2020
9 1168798 #6798 Collection November 15, 2015
10 1169530 #7530 Collection July 27, 2018
11 1169862 #7862 Collection January 08, 2021
Standard Deviation of Known Examples: 3,009.98 (Expected: 2,309.55, Δ700.43/8.76%)

Help Us Help Others By Improving the Database:

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Data Verification Reports

1162001
Verification Serial Map
1170000

Anonymous · March 28, 2022

Serial Number 1169039 was reported as accurate.

Anonymous · March 25, 2022

Serial Number 1169324 was reported as accurate.

Anonymous · September 1, 2021

Serial Number 1169067 was reported as accurate.

MoatsJustin1 2533 · August 3, 2021

Serial Number 1163135 was reported as accurate.

Anonymous · July 9, 2021

Serial Number 1167365 was reported as accurate.

mdmiller99 Supporter 29 · July 6, 2021

Serial Number 1162921 was reported as accurate.

Anonymous · May 20, 2021

Serial Number 1169720 was reported as accurate.

Anonymous · May 12, 2021

Serial Number 1162921 was reported as accurate.

ginia323 9 · May 3, 2021

Serial Number 1167165 was reported as accurate.

ginia323 9 · May 3, 2021

Serial Number 1167165 was reported as accurate.

ginia323 9 · May 2, 2021

Serial Number 1167165 was reported as accurate.

heicke 6 · January 20, 2021

Serial Number 1169839 was reported as accurate.

CJEmpire3 77 · January 2, 2021

Serial Number 1169862 was reported as accurate.

Anonymous · June 2, 2020

Serial Number 1162079 was reported as accurate.

Anonymous · June 1, 2020

Serial Number 1162079 was reported as accurate.

Anonymous · May 11, 2020

Serial Number 1162212 was reported as accurate.

Anonymous · April 27, 2020

Serial Number 1162319 was reported as accurate.

Anonymous · February 25, 2020

Serial Number 1165699 was reported as accurate.

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

Anonymous · January 31, 2020

Serial Number 1169324 was reported as accurate.

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

Anonymous · August 27, 2019

Serial Number 1164301 was reported as accurate.

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

Buckeyewatchguy 2 · July 15, 2019

Serial Number 1162147 was reported as accurate.

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

Anonymous · June 18, 2019

Serial Number 1163142 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 29, 2019

Serial Number 1162307 was reported as accurate.

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

bogus22 Supporter 81 · February 26, 2019

Serial Number 1163370 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

bogus22 Supporter 81 · February 22, 2019

Serial Number 1163370 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 · February 20, 2019

Serial Number 1163370 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