Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1170274
Access Date: May 15, 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:
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E. Howard Watch Co. (Keystone)
Grade: Series 10
| Manufacturer: | E. Howard Watch Co. (Keystone) |
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| Manufacturer Location: | Waltham, Massachusetts |
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| Movement Serial Number: | 1170274 |
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| Grade: | Series 10 |
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| Model: | 1907 |
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| Estimated Production Year: | 1913 |
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| Run Quantity: | 300 |
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| Grade/Model Run: | 13 of 21 |
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| Grade/Model Total Production: | 17,800 |
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| Size: | 16s |
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| Jewels: | 21j |
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| Jewel Setting: | Burnished Jewels |
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| Movement Configuration: | Openface |
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| Movement Finish: | Nickel |
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| Finish Pattern: | Parallel |
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| Movement Inlay Color: | Black |
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| Movement Setting: | Lever |
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| Wind Mechanism: | Pendant |
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| Plate: | Bridge Plate |
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| Bridge Type: | Center |
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| Double Roller: | Yes |
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| Barrel: | Going |
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| Regulator: | Reed |
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| Hairspring: | Breguet |
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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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| Dial Feet Locations: | 10.7, 24.3, 48.9 |
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| Movement Markings: |
E. Howard Watch Co. Boston U.S.A. 21 Jewels Series 10 [Star in Arrow] Pat'd. '10 Extra Adjustment Five Positions Temperature |
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| Case: | Various | |
| Run ID: | 263.G13.16S177.161907M72.O180.L52.21J37 | |
| Database Version: | v52.647 | |
| Advanced Metrics | ||
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| Registry Population: Scoped for This Run Only | 6 (2.00%) | |
| $ Estimated Value (12 Month Change): | 0.99% Analyzing 189 Sales | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
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There are 6 watches in the population registry for this run with 2 images.
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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.
CJEmpire3 Supporter 127 · January 31, 2025
Serial Number 1170258 was reported as accurate.
Fifty50 Supporter 350 · April 6, 2024
Serial Number 1170068 was reported as accurate.
Anonymous · August 9, 2020
Serial Number 1170012 was reported as inaccurate.
Anonymous · February 18, 2019
Serial Number 1170049 was reported as accurate.
Anonymous · November 14, 2018
Serial Number 1170098 was reported as accurate.
