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Information Provided by PocketWatchDatabase.com:
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/984921
https://pocketwatchdatabase.com/search/result/e.-howard-watch-co.-keystone/984921
Access Date: December 20, 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:
-Series9-16s.jpg)
E. Howard Watch Co. (Keystone)
Grade: Series 9
| Manufacturer: | E. Howard Watch Co. (Keystone) |  |
| Manufacturer Location: | Waltham, Massachusetts | |
| Movement Serial Number: | 984921 | |
| Grade: | Series 9 | |
| Model: | 1905 | |
| Estimated Production Year: | 1908 | |
| Run Quantity: | 3,500 | |
| Grade/Model Run: | 7 of 14 | |
| Grade/Model Total Production: | 15,610 | |
| Variant Est. Production: | 10,500 (16S-M1905-17J-ONP) | |
| Size: | 16s | |
| Jewels: | 17j | |
| Jewel Setting: | Gold Settings (Screw-Set) | |
| Movement Configuration: | Openface | |
| Movement Finish: | Nickel | |
| Finish Pattern: | Checkerboard | |
| Movement Setting: | Pendant | |
| Plate: | 3/4 Plate | |
| Double Roller: | Yes | |
| Regulator: | Reed | |
| Hairspring: | Breguet | |
| Standard Dial Type: | Single-Sunk | |
| 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 | |
| Movement Markings: | E. Howard Watch Co. Boston U.S.A. Adjusted 17 Jewels Pat'd '05 |
|
| Case: | Various | |
| Run ID: | 126.G7.16S102.161905M89.O72.P106.17J93 | |
| Database Version: | v52.516 | |
| Advanced Metrics | ||
| PWDB Absolute Rarity Index: Scoped for Grade/Size/Model/Configuration | 34.62 | |
| PWDB Relative Rarity Index: Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration | 121.72 | |
| Share of Production: Share within Manufacturer - Scoped for Grade/Size/Model/Configuration | 2.199% | |
| Registry Population: Scoped for This Run Only | 70 (2.00%) | |
|
Research Note: #983716: Reported with certificate indicating adjustment to 3 positions.
|
||
Production Metrics Tree: Grade Series 9
Target Profile: 16S-M1905-17J-ONP-A3PTI
| E. Howard Watch Co. (Keystone) Grade Series 9 (All Variations): 15,610 ETP | |
| 16S: 15,610 100.00% 16s, Grade Series 9 |
|
| 16S-M1905: 15,610 100.00% 16s, Grade Series 9, Model 1905 |
|
| 16S-M1905-17J: 15,610 100.00% 16s, Grade Series 9, Model 1905, 17 Jewels |
|
| 16S-M1905-17J-ONP: 10,500 67.26% 16s, Grade Series 9, Model 1905, 17 Jewels, Openface/Pendant/Nickel |
Other: 5,110
Other Configs or Unclassified |
| 16S-M1905-17J-ONP-A3PTI: 10,500 67.26% | |
Population Registry for This Run
| Image | Serial Number | Run Position | Primary Identification Method | Discovery Date | |
|---|---|---|---|---|---|
|
There are 70 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.
us0204 Supporter 37 · July 20, 2024
Serial Number 985038 was reported as accurate.
us0204 Supporter 37 · May 23, 2024
Serial Number 985038 was reported as accurate.
Anonymous · March 23, 2024
Serial Number 985526 was reported as accurate.
Anonymous · January 16, 2024
Serial Number 983726 was reported as accurate.
Anonymous · January 30, 2023
Serial Number 986750 was reported as accurate.
texnet 684 · November 2, 2021
Serial Number 983586 was reported as accurate.
Faberius Supporter 6 · June 27, 2021
Serial Number 984075 was reported as accurate.
nicnic Supporter 406 · May 14, 2021
Serial Number 985076 was reported as accurate.
Anonymous · January 22, 2021
Serial Number 984267 was reported as accurate.
Anonymous · July 28, 2020
Serial Number 985673 was reported as accurate.
Joef21 162 · June 22, 2020
Serial Number 985655 was reported as accurate.
Swoop7 23 · March 26, 2020
Serial Number 983788 was reported as accurate.
Swoop7 23 · March 26, 2020
Serial Number 983788 was reported as accurate.
Anonymous · December 9, 2019
Serial Number 983716 was reported as inaccurate.
Note: This movement , SN 983,716, is currently on EBAY
with the original license indicating that it is
adjusted to 3 positions.
How did you arrive at a SN cutoff for series
4 's and 9's? Should this be modified?, But how.
unless you have factory records.
It is possible that in the transition from 4
to 9, they began to used a 3 position balance
wheel (gold meantime and bras weighting screws
)rather than a 5 position balance wheel which had
all gold screws.
This remains a big mystery
with the original license indicating that it is
adjusted to 3 positions.
How did you arrive at a SN cutoff for series
4 's and 9's? Should this be modified?, But how.
unless you have factory records.
It is possible that in the transition from 4
to 9, they began to used a 3 position balance
wheel (gold meantime and bras weighting screws
)rather than a 5 position balance wheel which had
all gold screws.
This remains a big mystery
Curator Response: Thanks for the report. As indicated above the lookup table, the database is compiled from known observations. Factory catalogs and other original sources support that the Series 4 was adjusted to 5 positions while the Series 9 was adjusted to 3 positions. One visual modification between these two grades is the change to brass balance weight screws instead of gold. There is certainly a mixture of runs as the company introduced these modifications, possibly to fulfill orders properly for the "legacy" Series 4 grade. Thus, it is always important to closely inspect the movement to determine the grade within the transitional period.
Anonymous · November 5, 2019
Serial Number 985549 was reported as accurate.
Anonymous · October 23, 2019
Serial Number 983716 was reported as inaccurate.
Note: The original license describes this as a 3
position watch. The data base lists it as a 5
position watch. It is possible that during the
transition from series 4 to 9, some later series
4's may have been produced as 3 position movements
position watch. The data base lists it as a 5
position watch. It is possible that during the
transition from series 4 to 9, some later series
4's may have been produced as 3 position movements
Curator Response: Thanks for the report and information. This is exactly where production transitions from the Series 4 to the Series 9. Your information has allowed for further refinement on the estimated split between the Series 4 and Series 9 run, and the database has been updated accordingly.
Changes since this report was submitted:
Grade changed from Series 4 to Series 9
Movement Setting changed from Mixed to Pendant
Adjusted # Positions changed from 5 to 3
darkstar 247 · October 20, 2019
Serial Number 985556 was reported as accurate.
Anonymous · June 7, 2019
Serial Number 983625 was reported as inaccurate.
Note: As shown on EBAY the movement has the
checkerboard damaskeening characteristic of this
series 4. It is shown with a 24 hour Canadian
style Montgomery dial. It is marked Adj. 5 pos,
but also marked No.2. Presumably used for RR
service, there is no indication whether it is
pendant or lever set, but most likely the latter.
If so this movement qualifies for RR service. The
question remains , concerning the use of the term,
No.2
checkerboard damaskeening characteristic of this
series 4. It is shown with a 24 hour Canadian
style Montgomery dial. It is marked Adj. 5 pos,
but also marked No.2. Presumably used for RR
service, there is no indication whether it is
pendant or lever set, but most likely the latter.
If so this movement qualifies for RR service. The
question remains , concerning the use of the term,
No.2
Curator Response: Thanks for the report. Please provide a link to the auction page or the item number for further evaluation.
Changes since this report was submitted:
Grade changed from Series 4 to Series 9
Movement Setting changed from Mixed to Pendant
Adjusted # Positions changed from 5 to 3
Anonymous · June 2, 2019
Serial Number 984353 was reported as accurate.
Anonymous · February 1, 2019
Serial Number 986724 was reported as inaccurate.
No further details were submitted with the report.
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