Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1231521
Access Date: December 01, 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: | 1231521 | |
| Grade: | Series 7 | |
| Model: | 1912 | |
| Estimated Production Year: | 1913 | |
| Run Quantity: | 6,000 | |
| Grade/Model Run: | 9 of 18 | |
| Grade/Model Total Production: | 174,500 | |
| 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 | |
| Run ID: | 276.G30.12S64.121912M19.O176.P181.17J130 | |
| Database Version: | v51.836 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 373.24 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 1,270.17 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 24.780% | |
| Registry Population: | 3 (0.05%) | |
Production Metrics Tree: Grade Series 7
Target Profile: 12S-M1912-17J-ONP-A3PT
| E. Howard Watch Co. (Keystone) Grade Series 7 (All Variations): 227,900 ETP | |
| 12S: 227,900 100.00% 12s, Grade Series 7 |
|
| 12S-M1912: 174,500 76.57% 12s, Grade Series 7, Model 1912 |
Other: 53,400
Other Models or Unclassified |
| 12S-M1912-17J: 174,500 76.57% 12s, Grade Series 7, Model 1912, 17 Jewels |
|
| 12S-M1912-17J-ONP: 174,500 76.57% 12s, Grade Series 7, Model 1912, 17 Jewels, Openface/Pendant/Nickel |
|
| 12S-M1912-17J-ONP-A3PT: 174,500 76.57% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 3 watches in the population registry for this run with 3 images.
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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.
Anonymous · April 22, 2023
Serial Number 1232297 was reported as accurate.
Anonymous · August 15, 2022
Serial Number 1234239 was reported as accurate.
Bostonjoe Top Contributor Supporter 185 · December 17, 2021
Serial Number 1231521 was reported as accurate.
Anonymous · May 29, 2021
Serial Number 1236010 was reported as accurate.
Automatic 254 · August 12, 2020
Serial Number 1236473 was reported as accurate.
Anonymous · June 19, 2020
Serial Number 1234762 was reported as accurate.
Anonymous · April 7, 2020
Serial Number 1235537 was reported as accurate.
Anonymous · February 28, 2020
Serial Number 1235537 was reported as inaccurate.
17 jewels
TEMPERATURE
3 POS.
Anonymous · February 17, 2020
Serial Number 1235537 was reported as accurate.
Nhkohn 1 · November 9, 2019
Serial Number 1231100 was reported as accurate.
Anonymous · August 12, 2019
Serial Number 1236390 was reported as accurate.
Anonymous · July 3, 2019
Serial Number 1232962 was reported as accurate.
Anonymous · June 2, 2019
Serial Number 1236700 was reported as accurate.
