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 2 Pocket Watch Movement

E. Howard Watch Co. (Keystone)

Grade: Series 2

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 914169
Grade: Series 2
Model: 1905
Estimated Production Year: 1908
Run Quantity: 200
Total Production: 4,570
Size: 16s
Jewels: 17j
Jewel Material: Ruby & Sapphire
Jewel Setting: Raised Gold Settings (Screw-Set)
Movement Configuration: Hunting
Movement Finish: Nickel
Finish Pattern: Parallel Bar (mixed)
Movement Setting: Pendant
Plate: 3/4 Plate
Double Roller: Yes
Regulator: Reed
Hairspring: Breguet
Pallet Jewel Material: Sapphire
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: 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667
Research Note: #914203: Reported as Lever-Set.

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Data Verification Reports

Verification Serial Map

Anonymous ยท April 13, 2020

Serial Number 914169 was reported as inaccurate.

Note: Movement configuration is hunting case
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Movement Configuration changed from Openface to Hunting
Plate changed from Bridge to 3/4
E. Howard Watch Co. (Keystone) Grade Series 2 Pocket Watch Movement