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: 928360
Grade: Series 3
Model: 1905
Estimated Production Year: 1909
Run Quantity: 3,000
Grade/Model Run: 21 of 44
Grade/Model Total Production: 61,640
Variant Est. Production: 28,700 (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
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: 50.G21.16S32.161905M32.O30.P40.17J35
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
85.93
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
287.19
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
5.554%
Registry Population: 76 (2.53%)
$ Estimated Value (12 Month Change): 2.26% Analyzing 181 Sales
Research Note: #927004: Reported with Checkerboard Pattern. #927824: Reported as Lever-Set. #928968 and #929993: Reported as Hunting instead of Openface.

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.


Anonymous · March 28, 2023

Serial Number 929498 was reported as accurate.

Anonymous · March 11, 2023

Serial Number 927722 was reported as accurate.

mrgoodwatch Supporter 16 · July 4, 2021

Serial Number 928575 was reported as accurate.

Anonymous · May 4, 2021

Serial Number 929612 was reported as accurate.

Anonymous · December 6, 2020

Serial Number 929395 was reported as accurate.

Anonymous · November 17, 2020

Serial Number 929495 was reported as accurate.

MoatsJustin1 top-contributor 4691 · October 22, 2020

Serial Number 927721 was reported as accurate.

Anonymous · August 9, 2020

Serial Number 927285 was reported as accurate.

r72gsaol 37 · April 17, 2020

Serial Number 928219 was reported as accurate.

Anonymous · November 27, 2019

Serial Number 928250 was reported as accurate.

Anonymous · September 19, 2019

Serial Number 929477 was reported as accurate.

Anonymous · September 7, 2019

Serial Number 929209 was reported as accurate.

von1943 Supporter 371 · August 14, 2019

Serial Number 927939 was reported as accurate.

Anonymous · February 23, 2019

Serial Number 929780 was reported as accurate.

Anonymous · January 27, 2019

Serial Number 927030 was reported as accurate.

Anonymous · December 17, 2018

Serial Number 929509 was reported as accurate.

Anonymous · November 26, 2018

Serial Number 928711 was reported as accurate.

Anonymous · November 7, 2018

Serial Number 928671 was reported as accurate.

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