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 5 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 5

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 1110694 Question Mark
Grade: Series 5 Question Mark
Variation: Hooked Bridge Jeweled Barrel Question Mark
Model: 1907 Question Mark
Estimated Production Year: 1911 Question Mark
Run Quantity: 1,500 Question Mark
Grade/Model Run: 22 of 26 Question Mark
Grade/Model Total Production: 16,400 Question Mark
Variant Est. Production: 9,800 (16S-M1907-19J-ONL-A5PTI-HOOKED BRIDGE JEWELED BARREL) Question Mark
Size: 16s Question Mark
Jewels: 19j 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: Jeweled Safety Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Pallet Jewel Material: Sapphire 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
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Series 5
Adjusted
19 Jewels
[Triangle in Arrow]
Pat'd. '08
Extra Adjustment
Five Positions
Temperature
Case: Various Question Mark
Run ID: 210.G23.16S142.161907M42.O132.L29.19J35 Question Mark
Database Version: v52.528 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
43.95 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
154.56 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.792% Question Mark
Registry Population:
Scoped for This Run Only
8 (0.53%) Question Mark
$ Estimated Value (12 Month Change): -9.74% Analyzing 97 Sales Question Mark

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.


sroglum Supporter 36 · July 24, 2023

Serial Number 1111111 was reported as accurate.

ChrisG Top Contributor Supporter 610 · October 24, 2022

Serial Number 1110694 was reported as accurate.

Anonymous · January 23, 2022

Serial Number 1110770 was reported as accurate.

Anonymous · September 23, 2021

Serial Number 1110540 was reported as accurate.

Anonymous · September 18, 2021

Serial Number 1111004 was reported as accurate.

Anonymous · January 16, 2021

Serial Number 1111679 was reported as accurate.

Anonymous · November 24, 2020

Serial Number 1110990 was reported as accurate.

Anonymous · November 23, 2020

Serial Number 1110990 was reported as accurate.

Anonymous · November 12, 2020

Serial Number 1111378 was reported as accurate.

Kurlander Supporter 25 · August 13, 2020

Serial Number 1111700 was reported as accurate.

Anonymous · July 26, 2020

Serial Number 1111733 was reported as accurate.

Strawbs 11 · July 17, 2020

Serial Number 1110608 was reported as accurate.

Strawbs 11 · July 14, 2020

Serial Number 1110608 was reported as accurate.

bunnofnickle 67 · July 4, 2020

Serial Number 1111700 was reported as accurate.

Anonymous · May 6, 2020

Serial Number 1111157 was reported as accurate.

Anonymous · April 19, 2020

Serial Number 1111733 was reported as accurate.

Anonymous · March 23, 2019

Serial Number 1110950 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 5 Pocket Watch