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: 1256004
Grade: Series 7
Model: 1912
Estimated Production Year: 1913
Run Quantity: 13,000
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
Hairspring: Breguet
Adjusted: Yes
Adjusted # of Positions: 3
Adjusted to Temperature: Yes
Railroad Grade: No
Case: Various
Registry Population: 11 (0.08%)
Database Version: v49.712

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: bwcrtime
1249523 #2523 Collection April 02, 2018
2
Image Credit: tonydeniz
1251135 #4135 Collection October 22, 2015
3 1251505 #4505 Collection June 23, 2021
4 1252599 #5599 Collection May 15, 2022
5
Image Credit: Foregolf8y1
1253004 #6004 Collection September 20, 2019
6 1254743 #7743 Collection March 04, 2018
7
Image Credit: okiejohn
1256004 #9004 Collection December 10, 2021
8 1256336 #9336 Collection October 15, 2022
9
Image Credit: Faberius
1256402 #9402 Collection April 20, 2019
10
Image Credit: hossners
1259408 #12408 Collection July 07, 2019
11 1259509 #12509 Collection August 10, 2015
Standard Deviation of Known Examples: 3,307.01 (Expected: 3,752.92, Δ445.91/3.43%)

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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.


shortjoe 12 · May 15, 2022

Serial Number 1252599 was reported as accurate.

Anonymous · May 15, 2022

Serial Number 1252599 was reported as accurate.

okiejohn 310 · December 10, 2021

Serial Number 1256004 was reported as accurate.

Rcardkidz 2787 · August 15, 2021

Serial Number 1255249 was reported as accurate.

Anonymous · July 22, 2021

Serial Number 1256425 was reported as accurate.

TerryfromCanada Supporter 372 · March 17, 2021

Serial Number 1252057 was reported as accurate.

Anonymous · February 23, 2021

Serial Number 1254743 was reported as accurate.

Anonymous · September 18, 2020

Serial Number 1250459 was reported as accurate.

snellingt Supporter 32 · August 21, 2020

Serial Number 1254213 was reported as accurate.

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

Anonymous · August 11, 2020

Serial Number 1247840 was reported as accurate.

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

Anonymous · July 19, 2020

Serial Number 1251788 was reported as accurate.

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

Anonymous · May 31, 2020

Serial Number 1253137 was reported as accurate.

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

KBean001 34 · May 28, 2020

Serial Number 1250259 was reported as accurate.

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

KBean001 34 · May 28, 2020

Serial Number 1250259 was reported as accurate.

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

Anonymous · May 16, 2020

Serial Number 1250259 was reported as accurate.

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

cmdraven 3542 · April 19, 2020

Serial Number 1249505 was reported as accurate.

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

Anonymous · April 12, 2020

Serial Number 1257400 was reported as accurate.

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

Anonymous · April 7, 2020

Serial Number 1248990 was reported as accurate.

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

Anonymous · March 26, 2020

Serial Number 1257400 was reported as accurate.

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

Walter 63 · February 20, 2020

Serial Number 1255564 was reported as accurate.

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

Anonymous · September 21, 2019

Serial Number 1249185 was reported as accurate.

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

Anonymous · August 30, 2019

Serial Number 1258177 was reported as accurate.

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

Anonymous · June 23, 2019

Serial Number 1259408 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 14, 2019

Serial Number 1259007 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 · March 10, 2019

Serial Number 1250513 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 · September 23, 2018

Serial Number 1248900 was reported as accurate.

Changes since this report was submitted:
Grade changed from ? to Series 7
E. Howard Watch Co. (Keystone) Grade Series 7 Pocket Watch