Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/925948/movement
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/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: | 925948 | ![]() |
Grade: | Series 3 | ![]() |
Model: | 1905 | ![]() |
Estimated Production Year: | 1906 | ![]() |
Run Quantity: | 6,000 | ![]() |
Grade/Model Run: | 20 of 46 | ![]() |
Grade/Model Total Production: | 56,590 | ![]() |
Variant Est. Production: | 34,040 (16S-M1905-17J-HNP) | ![]() |
Size: | 16s | ![]() |
Jewels: | 17j | ![]() |
Jewel Material: | Ruby & Sapphire | ![]() |
Jewel Setting: | Gold Settings (Screw-Set) | ![]() |
Movement Configuration: | Hunting | ![]() |
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 Pat'd. '05 |
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Case: | Various | ![]() |
Run ID: | 54.G20.16S31.161905M30.H13.P45.17J33 | ![]() |
Database Version: | v52.383 | ![]() |
Advanced Metrics | ||
PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 102.48 | ![]() |
PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 403.20 | ![]() |
Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 5.988% | ![]() |
Registry Population: Scoped for This Run Only | 99 (1.65%) | ![]() |
$ Estimated Value (12 Month Change): | -1.64% Analyzing 183 Sales | ![]() |
Research Note: A few have been reported as openface.
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Production Metrics Tree: Grade Series 3
Target Profile: 16S-M1905-17J-HNP-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-HNP: 34,040 60.15% 16s, Grade Series 3, Model 1905, 17 Jewels, Hunting/Pendant/Nickel |
Other: 22,550
Other Configs or Unclassified |
16S-M1905-17J-HNP-A3PTI: 34,040 60.15% |
Population Registry for This Run
Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
---|---|---|---|---|---|
There are 99 watches in the population registry for this run with 5 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.
cjbrem Supporter 688 · July 3, 2024
Serial Number 921843 was reported as accurate.
jacekjot 4 · June 16, 2023
Serial Number 925948 was reported as inaccurate.
GT350me 27 · July 25, 2022
Serial Number 922278 was reported as accurate.
Bostonwatch 59 · September 3, 2020
Serial Number 925932 was reported as accurate.
Andrew9000 85 · December 13, 2018
Serial Number 924245 was reported as accurate.
![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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