Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/928520/movement
Access Date: November 01, 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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-Series3-16s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 3
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 928520 | |
| Grade: | Series 3 | |
| Model: | 1905 | |
| Estimated Production Year: | 1906 | |
| Run Quantity: | 3,000 | |
| Grade/Model Run: | 21 of 39 | |
| Grade/Model Total Production: | 49,390 | |
| 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 Pat'd. '05 |
|
| Case: | Various | |
| Run ID: | 55.G21.16S32.161905M31.O34.P46.17J34 | |
| Database Version: | v52.428 | |
| 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 | 238.77 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 4.316% | |
| Registry Population: Scoped for This Run Only | 78 (2.60%) | |
| $ Estimated Value (12 Month Change): | 3.76% Analyzing 190 Sales | |
|
Research Note: #927004: Reported with Checkerboard Pattern. #927824: Reported as Lever-Set. #928968 and #929993: Reported as Hunting instead of Openface.
|
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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): 49,390 ETP | |
| 16S: 49,390 100.00% 16s, Grade Series 3 |
|
| 16S-M1905: 49,390 100.00% 16s, Grade Series 3, Model 1905 |
|
| 16S-M1905-17J: 49,390 100.00% 16s, Grade Series 3, Model 1905, 17 Jewels |
|
| 16S-M1905-17J-ONP: 22,550 45.66% 16s, Grade Series 3, Model 1905, 17 Jewels, Openface/Pendant/Nickel |
Other: 26,840
Other Configs or Unclassified |
| 16S-M1905-17J-ONP-A3PTI: 22,550 45.66% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 78 watches in the population registry for this run with 6 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.
joe4646 Supporter 43 · June 28, 2024
Serial Number 928913 was reported as accurate.
joe4646 Supporter 43 · June 9, 2024
Serial Number 928913 was reported as accurate.
Anonymous · March 28, 2023
Serial Number 929498 was reported as accurate.
Anonymous · March 11, 2023
Serial Number 927722 was reported as accurate.
mrgoodwatch Supporter 16 · July 4, 2021
Serial Number 928575 was reported as accurate.
Anonymous · May 4, 2021
Serial Number 929612 was reported as accurate.
Anonymous · December 6, 2020
Serial Number 929395 was reported as accurate.
Anonymous · November 17, 2020
Serial Number 929495 was reported as accurate.
MoatsJustin1 top-contributor 5261 · October 22, 2020
Serial Number 927721 was reported as accurate.
Anonymous · August 9, 2020
Serial Number 927285 was reported as accurate.
r72gsaol 37 · April 17, 2020
Serial Number 928219 was reported as accurate.
Anonymous · November 27, 2019
Serial Number 928250 was reported as accurate.
Anonymous · September 19, 2019
Serial Number 929477 was reported as accurate.
Anonymous · September 7, 2019
Serial Number 929209 was reported as accurate.
von1943 Supporter 376 · August 14, 2019
Serial Number 927939 was reported as accurate.
Anonymous · February 23, 2019
Serial Number 929780 was reported as accurate.
Anonymous · January 27, 2019
Serial Number 927030 was reported as accurate.
Anonymous · December 17, 2018
Serial Number 929509 was reported as accurate.
Anonymous · November 26, 2018
Serial Number 928711 was reported as accurate.
Anonymous · November 7, 2018
Serial Number 928671 was reported as accurate.
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