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: 1206779
Grade: Series 7
Model: 1912
Estimated Production Year: 1913
Run Quantity: 12,000
Grade/Model Total Production: 172,700
Size: 12s
Jewels: 17j
Movement Configuration: Openface or Hunting
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: 13 (0.11%)
Database Version: v49.716

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 or Hunting/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 1205449 #449 Collection March 22, 2022
2
Image Credit: JenZo82
1206779 #1779 Collection January 23, 2018
3 1208022 #3022 Collection November 22, 2017
4 1208292 #3292 Collection December 09, 2015
5
Image Credit: MrCat63
1209754 #4754 Collection December 27, 2022
6 1210427 #5427 Collection March 16, 2014
7 1211267 #6267 Collection June 20, 2017
8 1211528 #6528 Collection November 27, 2020
9
Image Credit: oldtimers
1213095 #8095 Collection September 17, 2015
10 1213150 #8150 Collection August 19, 2018
11
Image Credit: Gregwood
1213174 #8174 Collection August 11, 2018
12 1214325 #9325 Collection December 24, 2017
13 1216243 #11243 Collection May 17, 2018
Standard Deviation of Known Examples: 3,151.37 (Expected: 3,464.25, Δ312.88/2.61%)

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 1, 2022

Serial Number 1208755 was reported as accurate.

Anonymous · June 12, 2022

Serial Number 1209690 was reported as accurate.

Anonymous · March 3, 2022

Serial Number 1214711 was reported as accurate.

Anonymous · March 2, 2022

Serial Number 1214711 was reported as accurate.

Anonymous · February 21, 2022

Serial Number 1213660 was reported as accurate.

Automatic 254 · June 27, 2021

Serial Number 1208900 was reported as accurate.

Anonymous · February 7, 2021

Serial Number 1213465 was reported as accurate.

Bostonwatch 59 · September 4, 2020

Serial Number 1213707 was reported as accurate.

Bostonwatch 59 · September 3, 2020

Serial Number 1213707 was reported as accurate.

Anonymous · August 24, 2020

Serial Number 1205029 was reported as accurate.

Anonymous · June 4, 2020

Serial Number 1205693 was reported as accurate.

Anonymous · May 12, 2020

Serial Number 1211055 was reported as accurate.

Anonymous · April 13, 2020

Serial Number 1215383 was reported as accurate.

Anonymous · April 8, 2020

Serial Number 1206348 was reported as accurate.

Anonymous · April 7, 2020

Serial Number 1207411 was reported as accurate.

Anonymous · March 30, 2020

Serial Number 1208460 was reported as accurate.

Anonymous · February 23, 2020

Serial Number 1212147 was reported as accurate.

Anonymous · January 10, 2020

Serial Number 1215962 was reported as accurate.

Anonymous · October 15, 2019

Serial Number 1216608 was reported as accurate.

Anonymous · September 27, 2019

Serial Number 1209566 was reported as accurate.

alexkedziekoins 22 · September 24, 2019

Serial Number 1211524 was reported as accurate.

Anonymous · September 23, 2019

Serial Number 1214908 was reported as accurate.

Anonymous · August 23, 2019

Serial Number 1208745 was reported as accurate.

Anonymous · May 17, 2019

Serial Number 1212409 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

Anonymous · April 23, 2019

Serial Number 1206896 was reported as accurate.

Changes since this report was submitted:
Plate changed from 3/4 to Bridge

curtis 42 · February 14, 2019

Serial Number 1211624 was reported as accurate.

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