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 3 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 3

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 938298
Grade: Series 3
Model: 1905
Estimated Production Year: 1909
Run Quantity: 2,000
Grade/Model Run: 28 of 44
Grade/Model Total Production: 61,640
Variant Est. Production: 32,940 (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
Railroad Grade: No
Dial Feet Locations: 10.7, 24.3, 48.9
U.S. Patents: 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667
Case: Various
Run ID: 63.G28.16S45.161905M45.H19.P52.17J48
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
98.62
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
329.63
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
6.375%
Registry Population: 33 (1.65%)
$ Estimated Value (12 Month Change): 2.26% Analyzing 181 Sales
Research Note: #939671 and #939715: Reported as Openface.

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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.


rjandladyj 183 · October 30, 2023

Serial Number 939608 was reported as accurate.

Anonymous · June 15, 2021

Serial Number 938011 was reported as accurate.

nicnic Supporter 378 · June 8, 2021

Serial Number 938298 was reported as accurate.

Matticus 14 · June 2, 2021

Serial Number 939323 was reported as accurate.

Anonymous · May 31, 2021

Serial Number 939498 was reported as accurate.

Anonymous · May 6, 2021

Serial Number 939323 was reported as accurate.

Anonymous · May 1, 2020

Serial Number 939037 was reported as accurate.

Anonymous · March 3, 2020

Serial Number 938976 was reported as accurate.

Anonymous · October 15, 2019

Serial Number 938627 was reported as inaccurate.

No further details were submitted with the report.
E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch