Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1300431
Access Date: January 27, 2023
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:
-Series7-12s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 7
Manufacturer: | E. Howard Watch Co. (Keystone) | ![]() |
Manufacturer Location: | Waltham, Massachusetts | ![]() |
Movement Serial Number: | 1300431 | ![]() |
Grade: | Series 7 | ![]() |
Model: | 1912 | ![]() |
Estimated Production Year: | 1915 | ![]() |
Run Quantity: | 14,000 | ![]() |
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: | 16 (0.11%) | ![]() |
Database Version: | v49.708 | ![]() |
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 | 1290522 | #522 | Collection | October 06, 2021 | |
2 | 1291850 | #1850 | Collection | July 09, 2016 | |
3 | 1291896 | #1896 | Collection | August 26, 2022 | |
4 | 1292239 | #2239 | Collection | July 21, 2015 | |
5 | 1293207 | #3207 | Collection | September 21, 2021 | |
6 | 1293365 | #3365 | Collection | November 13, 2022 | |
7 | 1294602 | #4602 | Collection | August 31, 2019 | |
8 | 1296534 | #6534 | Collection | September 28, 2022 | |
9 |
Image Credit: lorijean56 |
1298580 | #8580 | Collection | May 02, 2016 |
10 | 1298780 | #8780 | Collection | December 30, 2015 | |
11 | 1299102 | #9102 | Collection | August 19, 2018 | |
12 | 1300123 | #10123 | Collection | July 20, 2019 | |
13 |
![]() Image Credit: JDPorter81 |
1300431 | #10431 | Collection | May 03, 2021 |
14 | 1300650 | #10650 | Collection | June 05, 2019 | |
15 |
![]() Image Credit: countessj |
1300728 | #10728 | Collection | October 13, 2022 |
16 |
![]() Image Credit: texnet |
1302623 | #12623 | Collection | July 23, 2020 |
Standard Deviation of Known Examples: 3,986.28 (Expected: 4,041.60, Δ55.32/0.40%) |
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.
YankeeLover24 1 · October 28, 2022
Serial Number 1292842 was reported as accurate.
mcopper 54 · April 8, 2022
Serial Number 1297817 was reported as accurate.
petersas 14 · April 13, 2021
Serial Number 1301483 was reported as accurate.
bananajoe 4 · December 22, 2020
Serial Number 1293885 was reported as accurate.
Anonymous · November 4, 2020
Serial Number 1297703 was reported as inaccurate.
Bostonwatch 59 · September 4, 2020
Serial Number 1292159 was reported as accurate.
MoatsJustin1 2533 · August 15, 2020
Serial Number 1301658 was reported as accurate.
texnet Supporter 684 · July 23, 2020
Serial Number 1302623 was reported as accurate.
jmfoss03 33 · May 9, 2020
Serial Number 1292676 was reported as accurate.
windupthings 24 · April 10, 2020
Serial Number 1302623 was reported as accurate.
Anonymous · August 8, 2019
Serial Number 1301235 was reported as accurate.
texnet Supporter 684 · July 20, 2019
Serial Number 1300123 was reported as accurate.
Kevin H 84 · June 15, 2019
Serial Number 1290391 was reported as accurate.
AlbuquerqueCoins Supporter 4 · June 15, 2019
Serial Number 1296156 was reported as accurate.
Anonymous · May 5, 2019
Serial Number 1299991 was reported as accurate.
Anonymous · February 7, 2019
Serial Number 1297117 was reported as accurate.
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