Pocket Watch Database
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/972585
Access Date: December 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:
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E. Howard Watch Co. (Keystone)
Grade: Series 4
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 972585 | |
| Grade: | Series 4 | |
| Model: | 1905 | |
| Estimated Production Year: | 1908 | |
| Run Quantity: | 800 | |
| Grade/Model Run: | 20 of 24 | |
| Grade/Model Total Production: | 16,350 | |
| Variant Est. Production: | 4,800 (16S-M1905-17J-ONL) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Material: | Ruby & Sapphire | |
| Jewel Setting: | Gold Settings (Screw-Set) | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Checkerboard | |
| Movement Setting: | Lever | |
| Plate: | 3/4 Plate | |
| Double Roller: | Yes | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| Pallet Jewel Material: | Sapphire | |
| Standard Dial Type: | Double-Sunk | |
| Adjusted: | Yes | |
| Adjusted to Position: | Yes | |
| Adjusted # of Positions: | 5 | |
| Adjusted to Temperature: | Yes | |
| Adjusted to Isochronism: | Yes | |
| Railroad Grade: | 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: | 109.G20.16S86.161905M76.O63.L3.17J79 | |
| Database Version: | v52.518 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 36.79 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 129.34 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.337% | |
| Registry Population: Scoped for This Run Only | 19 (2.38%) | |
| $ Estimated Value (12 Month Change): | -5.49% Analyzing 72 Sales | |
|
Research Note: #972327: Reported as Pendant-Set.
|
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Production Metrics Tree: Grade Series 4
Target Profile: 16S-M1905-17J-ONL-A5PTI
| E. Howard Watch Co. (Keystone) Grade Series 4 (All Variations): 16,350 ETP | |
| 16S: 16,350 100.00% 16s, Grade Series 4 |
|
| 16S-M1905: 16,350 100.00% 16s, Grade Series 4, Model 1905 |
|
| 16S-M1905-17J: 16,350 100.00% 16s, Grade Series 4, Model 1905, 17 Jewels |
|
| 16S-M1905-17J-ONL: 4,800 29.36% 16s, Grade Series 4, Model 1905, 17 Jewels, Openface/Lever/Nickel |
Other: 11,550
Other Configs or Unclassified |
| 16S-M1905-17J-ONL-A5PTI: 4,800 29.36% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 19 watches in the population registry for this run with 1 image.
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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.
Anonymous · January 1, 2022
Serial Number 972040 was reported as accurate.
snellingt Supporter 32 · August 21, 2020
Serial Number 972139 was reported as accurate.
Andrew9000 85 · February 26, 2020
Serial Number 972570 was reported as accurate.
Andrew9000 85 · February 26, 2020
Serial Number 972570 was reported as accurate.
Anonymous · November 17, 2019
Serial Number 972487 was reported as inaccurate.
set cutout is present on the dial side of the
pillar plate. The balance wheel has 4 gold mean
time screws but the remaining weighting screws are
brass which is characteristic of a 3 position
movement. This movement maybe an example of the
transition of the 5 position series 4 to a 3
position series 9, while keeping the same
damaskeening. There is no clear cut SN demarcation
where this change began to take place,
Anonymous · January 6, 2019
Serial Number 972476 was reported as accurate.
avpalermo Supporter 645 · December 19, 2018
Serial Number 972087 was reported as accurate.
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