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)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1112898
Grade: Series 0
Variation: Arrow and Cross
Model: 1907
Estimated Production Year: 1912
Run Quantity: 2,000
Total Production: 16,650
Size: 16s
Jewels: 23j
Jewel Material: Ruby & Sapphire
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: Bridge Plate
Bridge Type: Center
Double Roller: Yes
Barrel: Jewelled Motor
Regulator: Reed
Hairspring: Breguet
Standard Dial Type: Double-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 5
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: Yes
Dial Feet Locations: 10.7, 24.3, 48.9
U.S. Patents: 796162, 886387, 900183, 978612, 981667, 1062645
Research Note: #1112071: Reported as Marked "No. 0"

Help Us Help Others By Improving the Database:

Does this information describe your movement accurately?

Data Verification Reports

1112001
Verification Serial Map
1114000

dfchong 818 · September 27, 2020

Serial Number 1112578 was reported as accurate.

cjbrem 53 · July 12, 2020

Serial Number 1112898 was reported as accurate.

kenkim2352 2 · December 24, 2019

Serial Number 1112554 was reported as accurate.

Anonymous · October 31, 2019

Serial Number 1112081 was reported as accurate.

WLBelkriver33 804 · March 9, 2019

Serial Number 1113859 was reported as accurate.

Anonymous · February 18, 2019

Serial Number 1113872 was reported as inaccurate.

Note: #1113872 is LEVER SET. All else is correct.
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes

barberr1 67 · January 29, 2019

Serial Number 1112578 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · November 13, 2018

Serial Number 1112898 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
E. Howard Watch Co. (Keystone) Grade Series 0 Pocket Watch