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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/34466/movement
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/34466/movement
Access Date: March 22, 2025
There is an alternative result available for this serial number. View the result for E. Howard & Co. movement #34466.
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 12
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 34466 | |
| Grade: | Series 12 | |
| Model: | 1921 | |
| Estimated Production Year: | 1924 | |
| Run Quantity: | 26,000 | |
| Grade/Model Run: | 1 of 5 | |
| Grade/Model Total Production: | 47,450 | |
| Size: | 10s | |
| Jewels: | 17j | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Standard Stripe | |
| Movement Setting: | Pendant | |
| Plate: | Bridge Plate | |
| Regulator: | Plain | |
| Hairspring: | Breguet | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted # of Positions: | 3 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Railroad Grade: | No | |
| Movement Markings: | E. Howard Watch Co. Boston, U.S.A. [Empty Circle in Arrow] Pat'd. '21 [Some Additionally Marked "17J"] |
|
| Case: | Various | |
| Run ID: | 8.G1.10S7.101921M7.O8.P8.17J1 | |
| Database Version: | v52.624 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 142.86 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 502.54 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 9.072% | |
| Registry Population: Scoped for This Run Only | 43 (0.17%) | |
| $ Estimated Value (12 Month Change): | 6.88% Analyzing 53 Sales | |
Production Metrics Tree: Grade Series 12
Target Profile: 10S-M1921-17J-ONP-A3PTI
| E. Howard Watch Co. (Keystone) Grade Series 12 (All Variations): 47,450 ETP |
| 10S: 47,450 100.00% 10s, Grade Series 12 |
| 10S-M1921: 47,450 100.00% 10s, Grade Series 12, Model 1921 |
| 10S-M1921-17J: 47,450 100.00% 10s, Grade Series 12, Model 1921, 17 Jewels |
| 10S-M1921-17J-ONP: 47,450 100.00% 10s, Grade Series 12, Model 1921, 17 Jewels, Openface/Pendant/Nickel |
| 10S-M1921-17J-ONP-A3PTI: 47,450 100.00% |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 43 watches in the population registry for this run with 15 images.
|
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Help Us Help Others By Improving the Database:
Does this information describe your movement accurately?
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 14, 2024
Serial Number 34457 was reported as inaccurate.
No further details were submitted with the report.
Anonymous · September 2, 2022
Serial Number 25162 was reported as inaccurate.
Note: 21 jewels for this serial number
Curator Response: Thanks for the report. If possible, please upload an image of the movement to your collection for further evaluation and documentation.
Anonymous · December 13, 2021
Serial Number 25604 was reported as inaccurate.
No further details were submitted with the report.
MoatsJustin1 top-contributor 5348 · September 25, 2021
Serial Number 31267 was reported as accurate.
Anonymous · June 22, 2021
Serial Number 22544 was reported as inaccurate.
Note: Hello All, Please see:
eBay item number:224500394955
E. Howard mvmt: SN: 22544, 44.5mm, KWKS, Series
III. I do not own this so; the other details
cannot be verified. The database info does not
seem close to a match. Thank you. Steve Burns
eBay item number:224500394955
E. Howard mvmt: SN: 22544, 44.5mm, KWKS, Series
III. I do not own this so; the other details
cannot be verified. The database info does not
seem close to a match. Thank you. Steve Burns
Curator Response: Thanks for the report. The watch listed on eBay is a product of E. Howard & Co. rather than the E. Howard Watch Co. owned by Keystone. Here is the correct lookup page: https://pocketwatchdatabase.com/search/result/e.-howard-co/22544
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