Pocket Watch Database
Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/52475
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/52475
Access Date: April 16, 2024
There is an alternative result available for this serial number. View the result for E. Howard & Co. movement #52475.
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:
E. Howard Watch Co. (Keystone)
Grade: Series 15
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 52475 | |
| Grade: | Series 15 | |
| Model: | 1921 | |
| Estimated Production Year: | 1924 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 2 of 2 | |
| Grade/Model Total Production: | 5,000 | |
| Size: | 10s | |
| Jewels: | 19j | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Movement Setting: | Pendant | |
| Plate: | Bridge Plate | |
| Hairspring: | Breguet | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted # of Positions: | 5 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Railroad Grade: | No | |
| Case: | Various | |
| Run ID: | 10.G2.10S10.101921M10.O10.P10.19J2 | |
| Database Version: | v52.235 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 15.05 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 49.95 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.968% | |
| Registry Population: | 2 (0.20%) | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
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There are 2 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.
Mrmaze505 1 · October 10, 2021
Serial Number 52436 was reported as accurate.
Anonymous · October 20, 2020
Serial Number 52762 was reported as accurate.
