Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1226165
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: | 1226165 | ![]() |
Grade: | Series 7 | ![]() |
Model: | 1912 | ![]() |
Estimated Production Year: | 1913 | ![]() |
Run Quantity: | 10,000 | ![]() |
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: | 11 (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 | 1221577 | #1577 | Collection | February 16, 2018 | |
2 |
![]() Image Credit: sean813 |
1221676 | #1676 | Collection | February 08, 2022 |
3 | 1222189 | #2189 | Collection | February 18, 2014 | |
4 | 1223733 | #3733 | Collection | July 16, 2020 | |
5 | 1224189 | #4189 | Collection | September 28, 2022 | |
6 |
![]() Image Credit: mbellich |
1226165 | #6165 | Collection | September 26, 2020 |
7 | 1226203 | #6203 | Collection | June 14, 2019 | |
8 |
![]() Image Credit: Grizzy |
1226770 | #6770 | Collection | March 22, 2019 |
9 | 1227067 | #7067 | Collection | April 24, 2016 | |
10 | 1227171 | #7171 | Collection | January 05, 2020 | |
11 | 1227234 | #7234 | Collection | June 11, 2021 | |
Standard Deviation of Known Examples: 2,296.71 (Expected: 2,886.90, Δ590.19/5.90%) |
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.
mbellich Supporter 24 · November 4, 2022
Serial Number 1226165 was reported as accurate.
lee571 Supporter 68 · December 14, 2020
Serial Number 1227676 was reported as accurate.
lee571 Supporter 68 · December 14, 2020
Serial Number 1227676 was reported as inaccurate.
Rcardkidz 2782 · May 5, 2020
Serial Number 1227104 was reported as accurate.
hudnic Supporter 78 · March 6, 2020
Serial Number 1229426 was reported as accurate.
Anonymous · November 5, 2019
Serial Number 1227564 was reported as inaccurate.
Anonymous · June 26, 2019
Serial Number 1222929 was reported as accurate.
Anonymous · June 24, 2019
Serial Number 1225787 was reported as inaccurate.
Anonymous · June 23, 2019
Serial Number 1223560 was reported as accurate.
Anonymous · May 23, 2019
Serial Number 1223029 was reported as accurate.
Anonymous · April 19, 2019
Serial Number 1220056 was reported as accurate.
Anonymous · March 16, 2019
Serial Number 1224070 was reported as accurate.
bubba70 543 · March 10, 2019
Serial Number 1222585 was reported as accurate.
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