Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1308342
Access Date: October 13, 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: | 1308342 | |
Grade: | Series 6 | |
Model: | 1912 | |
Estimated Production Year: | 1916 | |
Run Quantity: | 5,000 | |
Grade/Model Run: | 10 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: | 305.G19.12S79.121912M34.O218.P215.19J50 | |
Database Version: | v52.407 | |
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 | 2.488% | |
Registry Population: Scoped for This Run Only | 11 (0.22%) |
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 11 watches in the population registry for this run with 6 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.
GammaSky 4 · July 16, 2024
Serial Number 1306196 was reported as inaccurate.
Anonymous · July 15, 2024
Serial Number 1306196 was reported as inaccurate.
no triangle. The only capped jewel is the
balance, so it does appear to be 17 jewels. The
series seems to be mixed.
esrun59 15 · June 9, 2023
Serial Number 1308342 was reported as accurate.
Anonymous · March 3, 2019
Serial Number 1304268 was reported as inaccurate.
movement.
WLBelkriver33 804 · January 13, 2019
Serial Number 1308071 was reported as accurate.
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