Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/974571
Access Date: June 03, 2025
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:
-Series4-16s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 4
| Manufacturer: | E. Howard Watch Co. (Keystone) |
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| Manufacturer Location: | Waltham, Massachusetts |
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| Movement Serial Number: | 974571 |
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| Grade: | Series 4 |
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| Model: | 1905 |
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| Estimated Production Year: | 1908 |
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| Run Quantity: | 700 |
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| Grade/Model Run: | 22 of 25 |
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| Grade/Model Total Production: | 16,350 |
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| Variant Est. Production: | 4,800 (16S-M1905-17J-ONL) |
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| Size: | 16s |
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| Jewels: | 17j |
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| Jewel Material: | Ruby & Sapphire |
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| Jewel Setting: | Gold Settings (Screw-Set) |
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| Movement Configuration: | Openface |
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| Movement Finish: | Nickel |
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| Finish Pattern: | Checkerboard |
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| Movement Setting: | Lever |
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| Plate: | 3/4 Plate |
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| Double Roller: | Yes |
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| Regulator: | Reed |
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| Hairspring: | Breguet |
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| Pallet Jewel Material: | Sapphire |
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| Standard Dial Type: | Double-Sunk |
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| Adjusted: | Yes |
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| Adjusted to Position: | Yes |
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| Adjusted # of Positions: | 5 |
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| Adjusted to Temperature: | Yes |
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| Adjusted to Isochronism: | Yes |
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| Railroad Grade: | Yes |
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| U.S. Patents: | 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 |
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| Dial Feet Locations: | 10.7, 24.3, 48.9 |
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| Movement Markings: |
E. Howard Watch Co. Boston U.S.A. Adjusted 17 Jewels Pat'd '05 |
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| Case: | Various | |
| Run ID: | 117.G22.16S92.161905M82.O67.L7.17J86 | |
| Database Version: | v52.691 | |
| Advanced Metrics | ||
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| Registry Population: Scoped for This Run Only | 13 (1.86%) | |
| $ Estimated Value (12 Month Change): | 3.93% Analyzing 78 Sales | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
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There are 13 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.
ebsrods Supporter 131 · February 17, 2024
Serial Number 974571 was reported as accurate.
cmdraven 4137 · April 28, 2023
Serial Number 974334 was reported as accurate.
Anonymous · August 30, 2020
Serial Number 974620 was reported as accurate.
bunnofnickle 67 · August 2, 2020
Serial Number 974692 was reported as accurate.
Anonymous · July 5, 2020
Serial Number 974692 was reported as accurate.
Harlton Supporter 98 · January 27, 2020
Serial Number 974398 was reported as inaccurate.
