Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/966869
Access Date: May 03, 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: | 966869 | |
| Grade: | Series 9 | |
| Model: | 1905 | |
| Estimated Production Year: | 1910 | |
| Run Quantity: | 1,000 | |
| Grade/Model Run: | 5 of 15 | |
| Grade/Model Total Production: | 16,610 | |
| Variant Est. Production: | 5,110 (16S-M1905-17J-HNP) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Movement Configuration: | Hunting | |
| 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: | 90.G5.16S72.161905M68.H33.P76.17J71 | |
| Database Version: | v52.246 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 15.38 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 51.05 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 0.989% | |
| Registry Population: | 16 (1.60%) | |
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Research Note: #966374: Reported as Gilt Movement.
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Production Metrics Tree: Grade Series 9
Target Profile: 16S-M1905-17J-HNP-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 |
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| 16S-M1905-17J: 16,610 100.00% 16s, Grade Series 9, Model 1905, 17 Jewels |
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| 16S-M1905-17J-HNP: 5,110 30.76% 16s, Grade Series 9, Model 1905, 17 Jewels, Hunting/Pendant/Nickel |
Other: 11,500
Other Configs or Unclassified |
| 16S-M1905-17J-HNP-A3PTI: 5,110 30.76% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
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There are 16 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.
PHIL1199 Supporter 961 · July 23, 2022
Serial Number 966045 was reported as accurate.
Anonymous · July 11, 2022
Serial Number 966045 was reported as inaccurate.
Snapper Supporter 130 · March 9, 2021
Serial Number 966571 was reported as accurate.
Anonymous · August 31, 2020
Serial Number 966425 was reported as accurate.
Anonymous · October 7, 2019
Serial Number 966859 was reported as accurate.
