Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1282888/link
Access Date: December 30, 2024
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 6
Manufacturer: | E. Howard Watch Co. (Keystone) | |
Manufacturer Location: | Waltham, Massachusetts | |
Movement Serial Number: | 1282888 | |
Grade: | Series 6 | |
Model: | 1912 | |
Estimated Production Year: | 1915 | |
Run Quantity: | 1,750 | |
Grade/Model Run: | 9 of 10 | |
Grade/Model Total Production: | 13,000 | |
Size: | 12s | |
Jewels: | 19j | |
Jewel Setting: | Burnished Jewels | |
Movement Configuration: | Openface | |
Movement Finish: | Nickel | |
Movement Setting: | Pendant | |
Plate: | Bridge Plate | |
Double Roller: | Yes | |
Regulator: | Micrometric | |
Hairspring: | Breguet | |
Standard Dial Type: | Single-Sunk | |
Adjusted: | Yes | |
Adjusted # of Positions: | 5 | |
Adjusted to Temperature: | Yes | |
Railroad Grade: | No | |
Movement Markings: | E. Howard Watch Co. Boston U.S.A. 19 Jewels [Triangle in Arrow] Pat'd '12 Adjustment Five Positions And Temperature |
|
Case: | Various | |
Run ID: | 298.G18.12S76.121912M31.O212.P210.19J49 | |
Database Version: | v52.529 | |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 39.14 | |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 137.61 | |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.486% | |
Registry Population: Scoped for This Run Only | 5 (0.29%) |
Production Metrics Tree: Grade Series 6
Target Profile: 12S-M1912-19J-ONP-A5PT
E. Howard Watch Co. (Keystone) Grade Series 6 (All Variations): 19,700 ETP | |
12S: 19,700 100.00% 12s, Grade Series 6 |
|
12S-M1912: 13,000 65.99% 12s, Grade Series 6, Model 1912 |
Other: 6,700
Other Models or Unclassified |
12S-M1912-19J: 13,000 65.99% 12s, Grade Series 6, Model 1912, 19 Jewels |
|
12S-M1912-19J-ONP: 13,000 65.99% 12s, Grade Series 6, Model 1912, 19 Jewels, Openface/Pendant/Nickel |
|
12S-M1912-19J-ONP-A5PT: 13,000 65.99% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There are 5 watches in the population registry for this run with 3 images.
|
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.
JerryT Waltham Expert Small Watch Expert 425 · January 25, 2023
Serial Number 1282888 was reported as inaccurate.
1912 patent movement with 19 jewels and adjusted
to five positions and temperature.
Radiotron Supporter 48 · April 27, 2022
Serial Number 1281701 was reported as accurate.
Anonymous · November 27, 2021
Serial Number 1282533 was reported as accurate.
Rcardkidz 4142 · May 31, 2020
Serial Number 1281684 was reported as accurate.
Salvation2017 1 · April 30, 2020
Serial Number 1281795 was reported as accurate.
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