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 1 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 1

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1114586
Grade: Series 1
Variation: Type 5
Model: 1907
Estimated Production Year: 1912
Run Quantity: 600
Grade/Model Run: 7 of 7
Grade/Model Total Production: 5,700
Variant Est. Production: 600 (16S-M1907-21J-ONL-A0PTI-TYPE 5)
Size: 16s
Jewels: 21j
Jewel Material: Ruby & Sapphire
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Parallel
Movement Inlay Color: Black
Movement Setting: Lever
Plate: Bridge Plate
Bridge Type: Center
Double Roller: Yes
Barrel: Safety
Regulator: Reed
Hairspring: Breguet
Pallet Jewel Material: Sapphire
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 3 or 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Dial Feet Locations: 10.7, 24.3, 48.9
Case: Various
Run ID: 208.G7.16S137.161907M48.O122.L26.21J18
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
17.06
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
56.96
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
1.103%
Registry Population: 8 (1.33%)

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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 · April 15, 2023

Serial Number 1114826 was reported as accurate.

Milo18 Supporter 7 · September 19, 2022

Serial Number 1114990 was reported as accurate.

Anonymous · October 4, 2021

Serial Number 1114642 was reported as accurate.

esoxhunter Top Contributor Supporter 127 · May 13, 2021

Serial Number 1114463 was reported as accurate.

bunnofnickle 67 · July 3, 2020

Serial Number 1114755 was reported as accurate.

bunnofnickle 67 · July 2, 2020

Serial Number 1114755 was reported as accurate.

roadking 36 · March 2, 2020

Serial Number 1114586 was reported as accurate.

Anonymous · November 23, 2019

Serial Number 1114598 was reported as accurate.

Anonymous · November 7, 2018

Serial Number 1114894 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 1 Pocket Watch