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: 1103162
Grade: Series 0
Variation: Arrow and Cross
Model: 1907
Estimated Production Year: 1912
Run Quantity: 500
Total Production: 16,650
Size: 16s
Jewels: 23j
Jewel Material: Ruby & Sapphire
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever or Pendant
Plate: Bridge Plate
Bridge Type: Center
Double Roller: Yes
Barrel: Jeweled Safety
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: No
Dial Feet Locations: 10.7, 24.3, 48.9
U.S. Patents: 796162, 886387, 900183, 978612, 981667, 1062645

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Data Verification Reports

1103001
Verification Serial Map
1103500

Anonymous · April 14, 2021

Serial Number 1103110 was reported as accurate.

Anonymous · April 14, 2021

Serial Number 1103110 was reported as inaccurate.

No further details were submitted with the report.
E. Howard Watch Co. (Keystone) Grade Series 0 Pocket Watch