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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/999628
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/999628
Access Date: December 29, 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:
-Series7-12s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 7
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 999628 | |
| Grade: | Series 7 | |
| Variation: | Stopworks | |
| Model: | 1908 | |
| Estimated Production Year: | 1908 | |
| Run Quantity: | 300 | |
| Grade/Model Run: | 5 of 20 | |
| Grade/Model Total Production: | 53,450 | |
| Variant Est. Production: | 10,250 (12S-M1908-17J-ONP-A3PT-STOPWORKS) | |
| Size: | 12s | |
| Jewels: | 17j | |
| Jewel Setting: | Burnished Jewels | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Paralell | |
| Movement Setting: | Pendant | |
| Plate: | Bridge Plate | |
| Double Roller: | Yes | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| Standard Dial Type: | Single-Sunk | |
| Adjusted: | Yes | |
| Adjusted # of Positions: | 3 | |
| Adjusted to Temperature: | Yes | |
| Railroad Grade: | No | |
| Movement Markings: | E. Howard Watch Co. Boston U.S.A. Adjusted 17 Jewels Pat'd '08 |
|
| Case: | Various | |
| Run ID: | 135.G5.12S5.121908M5.O77.P112.17J101 | |
| Database Version: | v52.528 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 132.32 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 465.47 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 8.406% | |
| Registry Population: Scoped for This Run Only | 2 (0.67%) | |
|
Research Note: Equipped with Stop-Works
|
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Production Metrics Tree: Grade Series 7
Target Profile: 12S-M1908-17J-ONP-A3PT-STOPWORKS
| E. Howard Watch Co. (Keystone) Grade Series 7 (All Variations): 238,850 ETP | ||||
| 12S: 235,850 98.74% 12s, Grade Series 7 |
Other: 3,000
Other Sizes or Unclassified |
|||
| 12S-M1908: 53,450 22.38% 12s, Grade Series 7, Model 1908 |
Other: 182,400
Other Models or Unclassified |
|||
| 12S-M1908-17J: 53,450 22.38% 12s, Grade Series 7, Model 1908, 17 Jewels |
||||
| 12S-M1908-17J-ONP: 47,950 20.08% 12s, Grade Series 7, Model 1908, 17 Jewels, Openface/Pendant/Nickel |
Other: 5,500
Other Configs or Unclassified |
|||
| 12S-M1908-17J-ONP-A3PT: 47,950 20.08% | ||||
| 12S-M1908-17J-ONP-A3PT-STOPWORKS: 10,250 4.29% | Other: 37,700
Other Variants or Unclassified |
|||
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 2 watches in the population registry for this run with 1 image.
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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 · November 6, 2018
Serial Number 999668 was reported as accurate.
Changes since this report was submitted:
Plate changed from 3/4 to Bridge
