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 4 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 4

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 969703 Question Mark
Grade: Series 4 Question Mark
Model: 1905 Question Mark
Estimated Production Year: 1908 Question Mark
Run Quantity: 500 Question Mark
Grade/Model Run: 19 of 24 Question Mark
Grade/Model Total Production: 16,350 Question Mark
Variant Est. Production: 4,800 (16S-M1905-17J-ONL) Question Mark
Size: 16s Question Mark
Jewels: 17j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Jewel Setting: Gold Settings (Screw-Set) Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Finish Pattern: Checkerboard Question Mark
Movement Setting: Lever Question Mark
Plate: 3/4 Plate Question Mark
Double Roller: Yes 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
U.S. Patents: 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667 Question Mark
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Adjusted
17 Jewels
Pat'd. '05
Case: Various Question Mark
Run ID: 103.G19.16S80.161905M74.O59.L1.17J77 Question Mark
Database Version: v52.428 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
36.79 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
129.34 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.339% Question Mark
Registry Population:
Scoped for This Run Only
17 (3.40%) Question Mark
$ Estimated Value (12 Month Change): -18.47% Analyzing 72 Sales Question Mark
Research Note: #969991: Reported as Pendant-Set

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.


bsheets Supporter 5 · September 4, 2024

Serial Number 969703 was reported as accurate.

bsheets Supporter 5 · August 16, 2024

Serial Number 969703 was reported as accurate.

joe4646 Supporter 43 · June 28, 2024

Serial Number 969991 was reported as accurate.

joe4646 Supporter 43 · June 9, 2024

Serial Number 969991 was reported as accurate.

Anonymous · June 12, 2021

Serial Number 969706 was reported as accurate.

Anonymous · November 5, 2020

Serial Number 969546 was reported as accurate.

Anonymous · May 14, 2020

Serial Number 969839 was reported as accurate.

Anonymous · March 22, 2020

Serial Number 969941 was reported as accurate.

Fifty50 Supporter 350 · March 13, 2020

Serial Number 969839 was reported as accurate.

10mikemikes 25 · February 29, 2020

Serial Number 969969 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 4 Pocket Watch