Pocket Watch Database


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 9 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 9

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 984921 Question Mark
Grade: Series 9 Question Mark
Model: 1905 Question Mark
Estimated Production Year: 1908 Question Mark
Run Quantity: 3,500 Question Mark
Grade/Model Run: 7 of 14 Question Mark
Grade/Model Total Production: 15,610 Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Setting: Gold Settings (Screw-Set) Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Checkerboard Question Mark
Movement Setting: Pendant Question Mark
Plate: 3/4 Plate Question Mark
Double Roller: Yes Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted # of Positions: 3 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: No Question Mark
Dial Feet Locations: 10.7, 24.3, 48.9 Question Mark
U.S. Patents: 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Adjusted
17 Jewels
Pat'd '05
Case: Various Question Mark
Run ID: 126.G7.16S102.161905M89.O72.P106.17J93 Question Mark
Database Version: v52.445 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
34.62 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
121.72 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.201% Question Mark
Registry Population:
Scoped for This Run Only
69 (1.97%) Question Mark
Research Note: #983716: Reported with certificate indicating adjustment to 3 positions.

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 404 · 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
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
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
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.
E. Howard Watch Co. (Keystone) Grade Series 9 Pocket Watch