Anonymous · April 11, 2021
Serial Number 958053 was reported as accurate.
Information Provided by PocketWatchDatabase.com:
https://new.pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/958911
https://new.pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/958911
Access Date: June 3, 2026
From the American Horology Archive:
E. Howard Watch Co. (Keystone)
Grade: Series 9
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.
As a result, the information may contain inaccuracies. Please let us know if you have details that can improve the database.
| Manufacturer: | E. Howard Watch Co. (Keystone) | ? |
| Manufacturer Location: | Waltham, Massachusetts | ? |
| Movement Serial Number: | 958911 | ? |
| Grade: | Series 9 | ? |
| Model: | 1905 | ? |
| Estimated Production Year: | 1908 | ? |
| Run Quantity: | 1,000 | ? |
| Grade/Model Run: | 1 of 14 | ? |
| Grade/Model Total Production: | 15,610 | ? |
| Variant Est. Production: | 4,110 (16S-M1905-H-P) | ? |
| Size: | 16s | ? |
| Jewels: | 17j | ? |
| Jewel Setting: | Gold Settings (Screw-Set) | ? |
| Movement Configuration: | Hunting | ? |
| Movement Finish: | Nickel | ? |
| Finish Pattern: | Checkerboard | ? |
| Movement Setting: | Pendant | ? |
| Plate: | 3/4 Plate | ? |
| Double Roller: | Yes | ? |
| Regulator: | Reed | ? |
| Hairspring: | Breguet | ? |
| Adjusted: | Yes | ? |
| Adjusted # of Positions: | 3 | ? |
| Adjusted to Temperature: | Yes | ? |
| Adjusted to Isochronism: | Yes | ? |
| Railroad Grade: | No | ? |
| Dial Feet Locations: | 10.7, 24.3, 48.9 | ? |
| Movement Markings: | E. Howard Watch Co. Boston U.S.A. Adjusted 17 Jewels Pat'd. '05 | ? |
| Case: | Various | ? |
| Run ID: | 92.G1.16S67.161905M61.H30.P81.17J65 | ? |
| Database Version: | v52.978 | ? |
| Advanced Metrics | ||
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| Registry Population: Scoped for This Run Only: | 22 (2.20%) | ? |
| $ Estimated Value (12 Month Change): | +0.42% Analyzing 75 Sales | ? |
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Research Note: #958838: Reported as Marked "Abbott Watch Co." with Circular Pattern, #958423: Verified with White Train and Gold Meantime/Brass Balance Screws. #958723: Verified with Gold Meantime/Brass Balance Screws, consistent with Series 9 classification.
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Continue Your Research
Population Registry for This Run
Total Known Population In Run 22/1,000
Percentage of Total Run 2.20%
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There are 22 watches in the population registry for this run with 1 image.
Create a FREE account or login to view the population registry and add your watch to the registry. |
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Why Might This Information Be Incorrect?
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Verification reports help confirm surviving examples and flag data that needs further research.
Verification Reports for this Run
The following reports have been submitted by members in reference to this production run. These reports help verify data and track inaccuracies that require further research.
Anonymous · February 18, 2020
Serial Number 958211 was reported as accurate.
Snapper · September 6, 2019
Serial Number 958723 was reported as accurate.
Changes since this report was submitted:
- Grade changed from Series 4 to Series 9
- Adjusted Positions changed from 5 to 3