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 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 3

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 941634
Grade: Series 3
Model: 1905
Estimated Production Year: 1907
Run Quantity: 2,000
Grade/Model Run: 29 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: 70.G29.16S47.161905M46.O43.P61.17J49
Database Version: v52.407
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
47 (2.35%)
$ Estimated Value (12 Month Change): 1.08% Analyzing 189 Sales

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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 · October 6, 2024

Serial Number 940466 was reported as accurate.

Anonymous · May 21, 2024

Serial Number 940650 was reported as accurate.

PHIL1199 Supporter 1106 · February 25, 2024

Serial Number 941527 was reported as accurate.

Anonymous · March 10, 2022

Serial Number 941004 was reported as accurate.

Anonymous · June 13, 2021

Serial Number 940878 was reported as accurate.

Anonymous · May 31, 2021

Serial Number 940578 was reported as accurate.

Anonymous · September 25, 2020

Serial Number 941291 was reported as accurate.

Anonymous · September 25, 2020

Serial Number 941291 was reported as accurate.

Anonymous · September 2, 2020

Serial Number 941568 was reported as accurate.

Anonymous · April 9, 2020

Serial Number 940209 was reported as accurate.

Anonymous · January 3, 2020

Serial Number 940975 was reported as accurate.

Anonymous · December 9, 2019

Serial Number 941054 was reported as accurate.

Milo18 Supporter 7 · November 7, 2019

Serial Number 941282 was reported as accurate.

Anonymous · June 6, 2019

Serial Number 940633 was reported as accurate.

Anonymous · May 29, 2019

Serial Number 940484 was reported as accurate.

Anonymous · March 30, 2019

Serial Number 940544 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch
E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch