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 0 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 0

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 1159744 Question Mark
Grade: Series 0 Question Mark
Variation: Hooked Bridge Jeweled Banking Pins Question Mark
Model: 1907 Question Mark
Estimated Production Year: 1913 Question Mark
Run Quantity: 1,500 Question Mark
Grade/Model Run: 23 of 28 Question Mark
Grade/Model Total Production: 15,900 Question Mark
Variant Est. Production: 6,500 (16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BANKING PINS) Question Mark
Size: 16s Question Mark
Jewels: 23j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Jewel Setting: Burnished Jewels Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: Center Question Mark
Double Roller: Yes Question Mark
Barrel: Going Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Standard Dial Type: Double-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 5 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: Yes Question Mark
Railroad Grade: Yes Question Mark
Dial Feet Locations: 10.7, 24.3, 48.9 Question Mark
U.S. Patents: 796162, 886387, 900183, 978612, 981667, 1062645 Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
23 Jewels
Series 0
[Cross in Arrow]
Pat'd. '10
Special Adjustment
Five Positions
Temperature
Case: Various Question Mark
Run ID: 257.G25.16S176.161907M71.O175.L51.23J35 Question Mark
Database Version: v52.518 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
39.29 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
138.14 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.496% Question Mark
Registry Population:
Scoped for This Run Only
14 (0.93%) Question Mark
$ Estimated Value (12 Month Change): -4.66% Analyzing 96 Sales Question Mark
Research Note: Ruby Banking Pins

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 · November 8, 2024

Serial Number 1159819 was reported as accurate.

avpalermo Supporter 645 · June 28, 2024

Serial Number 1159744 was reported as accurate.

Anonymous · April 21, 2022

Serial Number 1159883 was reported as accurate.

Anonymous · January 28, 2022

Serial Number 1159458 was reported as accurate.

Anonymous · December 5, 2021

Serial Number 1159613 was reported as accurate.

Anonymous · November 30, 2021

Serial Number 1159613 was reported as accurate.

2mnyboxers Supporter 408 · September 3, 2021

Serial Number 1159356 was reported as accurate.

Anonymous · August 19, 2021

Serial Number 1158814 was reported as accurate.

bob62938 4 · February 14, 2021

Serial Number 1159054 was reported as accurate.

Anonymous · December 4, 2020

Serial Number 1159997 was reported as accurate.

Anonymous · October 25, 2020

Serial Number 1159005 was reported as accurate.

Anonymous · September 13, 2020

Serial Number 1158543 was reported as accurate.

Anonymous · August 17, 2020

Serial Number 1159271 was reported as accurate.

Anonymous · July 24, 2020

Serial Number 1159898 was reported as accurate.

Anonymous · July 17, 2020

Serial Number 1159898 was reported as accurate.

Anonymous · March 25, 2020

Serial Number 1158625 was reported as accurate.

Anonymous · February 7, 2020

Serial Number 1158650 was reported as accurate.

Anonymous · January 29, 2020

Serial Number 1159955 was reported as accurate.

Anonymous · December 28, 2019

Serial Number 1159937 was reported as accurate.

Silvercloud 183 · October 16, 2019

Serial Number 1159237 was reported as accurate.

Anonymous · March 30, 2019

Serial Number 1158625 was reported as accurate.

Anonymous · February 7, 2019

Serial Number 1159984 was reported as accurate.

Anonymous · November 19, 2018

Serial Number 1159086 was reported as accurate.

Anonymous · November 15, 2018

Serial Number 1159984 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 0 Pocket Watch