Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/915062/link
Access Date: August 23, 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:
![E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch](https://pocketwatchdatabase.com/assets/images/movements/E.HowardWatchCo.(Keystone)-Series3-16s-Openface.jpg)
![E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch](https://pocketwatchdatabase.com/assets/images/cuts/E.HowardWatchCo.(Keystone)-Series3-16s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 3
Manufacturer: | E. Howard Watch Co. (Keystone) | ![]() |
Manufacturer Location: | Waltham, Massachusetts | ![]() |
Movement Serial Number: | 915062 | ![]() |
Grade: | Series 3 | ![]() |
Model: | 1905 | ![]() |
Estimated Production Year: | 1906 | ![]() |
Run Quantity: | 3,000 | ![]() |
Grade/Model Run: | 19 of 46 | ![]() |
Grade/Model Total Production: | 56,590 | ![]() |
Variant Est. Production: | 22,550 (16S-M1905-17J-ONP) | ![]() |
Size: | 16s | ![]() |
Jewels: | 17j | ![]() |
Jewel Material: | Ruby & Sapphire | ![]() |
Jewel Setting: | Gold Settings (Screw-Set) | ![]() |
Movement Configuration: | Openface | ![]() |
Movement Finish: | Nickel | ![]() |
Finish Pattern: | Circular | ![]() |
Movement Setting: | Pendant | ![]() |
Plate: | 3/4 Plate | ![]() |
Regulator: | Reed | ![]() |
Hairspring: | Breguet | ![]() |
Pallet Jewel Material: | Sapphire | ![]() |
Standard Dial Type: | Single-Sunk | ![]() |
Adjusted: | Yes | ![]() |
Adjusted to Position: | Yes | ![]() |
Adjusted # of Positions: | 3 | ![]() |
Adjusted to Temperature: | Yes | ![]() |
Adjusted to Isochronism: | Yes | ![]() |
Dial Feet Locations: | 10.7, 24.3, 48.9 | ![]() |
U.S. Patents: | 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 | ![]() |
Movement Markings: | E. Howard Watch Co. Boston U.S.A. Adjusted 17 Jewels |
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Case: | Various | ![]() |
Run ID: | 52.G19.16S30.161905M29.O33.P44.17J32 | ![]() |
Database Version: | v52.383 | ![]() |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 67.89 | ![]() |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 267.06 | ![]() |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 3.967% | ![]() |
Registry Population: Scoped for This Run Only | 76 (2.53%) | ![]() |
$ Estimated Value (12 Month Change): | -1.64% Analyzing 183 Sales | ![]() |
Research Note: #916117: Reported as Lever-Set.
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Production Metrics Tree: Grade Series 3
Target Profile: 16S-M1905-17J-ONP-A3PTI
E. Howard Watch Co. (Keystone) Grade Series 3 (All Variations): 56,590 ETP | |
16S: 56,590 100.00% 16s, Grade Series 3 |
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16S-M1905: 56,590 100.00% 16s, Grade Series 3, Model 1905 |
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16S-M1905-17J: 56,590 100.00% 16s, Grade Series 3, Model 1905, 17 Jewels |
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16S-M1905-17J-ONP: 22,550 39.85% 16s, Grade Series 3, Model 1905, 17 Jewels, Openface/Pendant/Nickel |
Other: 34,040
Other Configs or Unclassified |
16S-M1905-17J-ONP-A3PTI: 22,550 39.85% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There are 76 watches in the population registry for this run with 3 images.
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Help Us Help Others By Improving the Database:
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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.
pmtime Supporter 561 · January 6, 2024
Serial Number 915408 was reported as accurate.
us0204 Supporter 35 · September 11, 2023
Serial Number 915881 was reported as inaccurate.
the data base. Mine are approximate as follows,
8.0-24.1-45.2
aconner 62 · October 20, 2021
Serial Number 915661 was reported as accurate.
aconner 62 · September 18, 2021
Serial Number 915661 was reported as accurate.
aconner 62 · September 18, 2021
Serial Number 915661 was reported as inaccurate.
actually a hunting case configuration.
![E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch](https://pocketwatchdatabase.com/assets/images/movements/E.HowardWatchCo.(Keystone)-Series3-16s-Openface.jpg)
![E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch](https://pocketwatchdatabase.com/assets/images/cuts/E.HowardWatchCo.(Keystone)-Series3-16s.jpg)
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