Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/963217
Access Date: April 19, 2024
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 9
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 963217 | |
| Grade: | Series 9 | |
| Model: | 1905 | |
| Estimated Production Year: | 1910 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 4 of 15 | |
| Grade/Model Total Production: | 16,610 | |
| Variant Est. Production: | 11,000 (16S-M1905-17J-ONP) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Checkerboard | |
| Movement Setting: | Pendant | |
| Plate: | 3/4 Plate | |
| Double Roller: | Yes | |
| Hairspring: | Breguet | |
| Adjusted: | Yes | |
| Adjusted # of Positions: | 3 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Railroad Grade: | No | |
| Dial Feet Locations: | 10.7, 24.3, 48.9 | |
| U.S. Patents: | 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 | |
| Case: | Various | |
| Run ID: | 88.G4.16S70.161905M66.O50.P74.17J69 | |
| Database Version: | v52.235 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 34.62 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 115.02 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.226% | |
| Registry Population: | 29 (2.90%) | |
|
Research Note: #963344: Confirmed as consistent with Series 9 features and includes a matching certificate stating adjustment to three positions.
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Production Metrics Tree: Grade Series 9
Target Profile: 16S-M1905-17J-ONP-A3PTI
| E. Howard Watch Co. (Keystone) Grade Series 9 (All Variations): 16,610 ETP | |
| 16S: 16,610 100.00% 16s, Grade Series 9 |
|
| 16S-M1905: 16,610 100.00% 16s, Grade Series 9, Model 1905 |
|
| 16S-M1905-17J: 16,610 100.00% 16s, Grade Series 9, Model 1905, 17 Jewels |
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| 16S-M1905-17J-ONP: 11,000 66.23% 16s, Grade Series 9, Model 1905, 17 Jewels, Openface/Pendant/Nickel |
Other: 5,610
Other Configs or Unclassified |
| 16S-M1905-17J-ONP-A3PTI: 11,000 66.23% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 29 watches in the population registry for this run.
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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 · January 30, 2023
Serial Number 963329 was reported as accurate.
ABUMALEK 97 · June 18, 2021
Serial Number 963420 was reported as accurate.
cmdraven 3990 · June 6, 2021
Serial Number 963132 was reported as accurate.
Fifty50 Supporter 324 · May 8, 2021
Serial Number 963217 was reported as accurate.
Fifty50 Supporter 324 · April 22, 2021
Serial Number 963217 was reported as accurate.
Anonymous · December 7, 2020
Serial Number 963542 was reported as accurate.
Anonymous · March 9, 2020
Serial Number 963110 was reported as accurate.
Snapper Supporter 130 · October 30, 2019
Serial Number 963464 was reported as accurate.
Anonymous · August 5, 2019
Serial Number 963344 was reported as inaccurate.
that this is a 3 position adjusted movement, not 5
positions which the database suggests.
Anonymous · May 7, 2019
Serial Number 963553 was reported as accurate.
