bhamjoe · April 10, 2025
Serial Number 926107 was reported as accurate.
Information Provided by PocketWatchDatabase.com:
https://new.pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/921207
https://new.pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/921207
Access Date: June 3, 2026
From the American Horology Archive:
E. Howard Watch Co. (Keystone)
Grade: Series 3
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: | 921207 | ? |
| Grade: | Series 3 | ? |
| Model: | 1905 | ? |
| Estimated Production Year: | 1906 | ? |
| Run Quantity: | 6,000 | ? |
| Grade/Model Run: | 11 of 39 | ? |
| Grade/Model Total Production: | 49,390 | ? |
| Variant Est. Production: | 26,840 (16S-M1905-H) | ? |
| Size: | 16s | ? |
| Jewels: | 17j | ? |
| Jewel Material: | Ruby & Sapphire | ? |
| Jewel Setting: | Gold Settings (Screw-Set) | ? |
| Movement Configuration: | Hunting | ? |
| Movement Finish: | Nickel | ? |
| Finish Pattern: | Circular | ? |
| Movement Setting: | Pendant | ? |
| Plate: | 3/4 Plate | ? |
| Regulator: | Reed | ? |
| Hairspring: | Breguet | ? |
| Pallet Jewel Material: | Sapphire | ? |
| Standard Dial Type: | Single-Sunk | ? |
| Adjusted: | Yes | ? |
| Adjusted to Position: | Yes | ? |
| Adjusted # of Positions: | 3 | ? |
| Adjusted to Temperature: | Yes | ? |
| Adjusted to Isochronism: | Yes | ? |
| 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: | 56.G20.16S31.161905M30.H14.P45.17J34 | ? |
| Database Version: | v52.978 | ? |
| Advanced Metrics | ||
| Members Only Data. Login or create a free account to unlock. | ||
| Registry Population: Scoped for This Run Only: | 103 (1.72%) | ? |
| $ Estimated Value (12 Month Change): | +7.79% Analyzing 316 Sales | ? |
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Research Note: A few have been reported as openface.
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Continue Your Research
Population Registry for This Run
Total Known Population In Run 103/6,000
Percentage of Total Run 1.72%
|
There are 103 watches in the population registry for this run with 7 images.
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?
Does this information describe your movement accurately?
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.
Snapper · December 26, 2024
Serial Number 924094 was reported as accurate.
Anonymous · October 20, 2024
Serial Number 926878 was reported as accurate.
cjbrem · July 3, 2024
Serial Number 921843 was reported as accurate.
Changes since this report was submitted:
- Setting changed from Lever or Pendant to Pendant
Anonymous · August 17, 2023
Serial Number 925888 was reported as accurate.
jacekjot · June 16, 2023
Serial Number 925948 was reported as inaccurate.
No further details were submitted with the report.
GT350me · July 25, 2022
Serial Number 922278 was reported as accurate.
Anonymous · July 25, 2022
Serial Number 922278 was reported as accurate.
Anonymous · May 16, 2022
Serial Number 924067 was reported as accurate.
Anonymous · January 31, 2022
Serial Number 922572 was reported as accurate.
Anonymous · January 11, 2022
Serial Number 923774 was reported as accurate.
Anonymous · December 29, 2021
Serial Number 922572 was reported as accurate.
Anonymous · July 20, 2021
Serial Number 923959 was reported as accurate.
Anonymous · July 1, 2021
Serial Number 925388 was reported as accurate.
Anonymous · June 30, 2021
Serial Number 922202 was reported as accurate.
Anonymous · January 17, 2021
Serial Number 926686 was reported as accurate.
Anonymous · January 16, 2021
Serial Number 926774 was reported as accurate.
Anonymous · September 18, 2020
Serial Number 924027 was reported as accurate.
Bostonwatch · September 3, 2020
Serial Number 925932 was reported as accurate.
Anonymous · August 30, 2020
Serial Number 922413 was reported as accurate.
Anonymous · August 16, 2020
Serial Number 923462 was reported as accurate.
Anonymous · July 24, 2020
Serial Number 926466 was reported as accurate.
Anonymous · June 2, 2020
Serial Number 921709 was reported as accurate.
Anonymous · May 1, 2020
Serial Number 921021 was reported as accurate.
Anonymous · February 21, 2020
Serial Number 922202 was reported as accurate.
Anonymous · February 8, 2020
Serial Number 926377 was reported as accurate.
Anonymous · February 2, 2020
Serial Number 926978 was reported as accurate.
Anonymous · October 18, 2019
Serial Number 924432 was reported as accurate.
Anonymous · September 6, 2019
Serial Number 924094 was reported as accurate.
Anonymous · August 2, 2019
Serial Number 926466 was reported as accurate.
Anonymous · July 26, 2019
Serial Number 926466 was reported as accurate.
Anonymous · July 9, 2019
Serial Number 925321 was reported as accurate.
Anonymous · April 21, 2019
Serial Number 921689 was reported as accurate.
Anonymous · February 9, 2019
Serial Number 921483 was reported as accurate.
Andrew9000 · December 13, 2018
Serial Number 924245 was reported as accurate.