Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/1000267-series_0/movement
Access Date: May 09, 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:
-Series0-16s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 0
| Manufacturer: | E. Howard Watch Co. (Keystone) |
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| Manufacturer Location: | Waltham, Massachusetts |
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| Movement Serial Number: | 1000267 |
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| Grade: | Series 0 |
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| Variation: | Login to View |
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| Model: | Bridge |
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| Estimated Production Year: | Login to View |
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| Run Quantity: | Login to View |
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| Grade/Model Run: | Login to View |
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| Grade/Model Total Production: | Login to View |
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| Variant Est. Production: | Login to View |
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| Size: | 16s |
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| Jewels: | 23j |
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| Jewel Material: | Login to View |
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| Jewel Setting: | Login to View |
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| Movement Configuration: | Hunting |
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| Movement Finish: | Nickel |
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| Finish Pattern: | Login to View |
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| Movement Setting: | Pendant |
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| Plate: | Bridge Plate |
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| Double Roller: | Yes |
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| Regulator: | Login to View |
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| Hairspring: | Login to View |
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| Standard Dial Type: | Login to View |
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| Adjusted: | Login to View |
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| Adjusted to Position: | Login to View |
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| Adjusted # of Positions: | Login to View |
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| Adjusted to Temperature: | Login to View |
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| Adjusted to Isochronism: | Login to View |
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| Railroad Grade: | Login to View |
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| U.S. Patents: | Login to View |
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| Movement Markings: | Login to View | |
| Case: | Various | |
| Run ID: | 139.G7.16S107.M1.H49.P115.23J9 | |
| Database Version: | v52.645 | |
| Advanced Metrics | ||
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| Registry Population: Scoped for This Run Only | 8 (1.33%) | |
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Research Note: Production Note: Waltham-era production serial numbers collide with later production. The 23-Jewel movements were manufactured by Waltham for the E. Howard Watch Co., while the 17-Jewel movements were manufactured by E. Howard in a later era. The serial numbers for these production blocks overlap up to approximately serial 1000600.
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20 Additional Member-Only Data Points Available
The following information is unlocked with a free account:
Variation, Estimated Production Year, Run Quantity, Grade/Model Run, Grade/Model Total Production, Variant Est. Production, Jewel Material, Jewel Setting, Finish Pattern, Regulator Type, Hairspring, Standard Dial Type, Adjustments, Adjusted to Position, Positional Adjustments, Temperature Adjustments, Isochronism Adjustments, Railroad Grade Designation, U.S. Patents, Movement Markings
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
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There are 8 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.
Anonymous · September 16, 2024
Serial Number 1000535 was reported as accurate.
Anonymous · June 25, 2023
Serial Number 1000112 was reported as inaccurate.
Anonymous · June 27, 2021
Serial Number 1000458 was reported as accurate.
Anonymous · June 23, 2021
Serial Number 1000139 was reported as accurate.
Anonymous · October 6, 2019
Serial Number 1000412 was reported as inaccurate.
ralph1 117 · July 12, 2019
Serial Number 1000518 was reported as inaccurate.
E Howard Watch Co Boston USA, .S #1000518
