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 3 Pocket Watch
E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 3

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 892224 Question Mark
Grade: Series 3 Question Mark
Model: 1905 Question Mark
Estimated Production Year: 1906 Question Mark
Run Quantity: 1,000 Question Mark
Grade/Model Run: 12 of 39 Question Mark
Grade/Model Total Production: 49,390 Question Mark
Variant Est. Production: 22,550 (16S-M1905-17J-ONP) 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: Circular Question Mark
Movement Setting: Pendant Question Mark
Plate: 3/4 Plate Question Mark
Regulator: Reed Question Mark
Hairspring: Breguet Question Mark
Pallet Jewel Material: Sapphire Question Mark
Standard Dial Type: Single-Sunk Question Mark
Adjusted: Yes Question Mark
Adjusted to Position: Yes Question Mark
Adjusted # of Positions: 3 Question Mark
Adjusted to Temperature: Yes Question Mark
Adjusted to Isochronism: 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
Case: Various Question Mark
Run ID: 38.G12.16S19.161905M18.O27.P34.17J21 Question Mark
Database Version: v52.452 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
67.89 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
238.77 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
4.316% Question Mark
Registry Population:
Scoped for This Run Only
23 (2.30%) Question Mark
$ Estimated Value (12 Month Change): 14.92% Analyzing 193 Sales Question Mark
Research Note: #892133: Reported as Lever-Set

Help Us Help Others By Improving the Database:

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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.


PHIL1199 Supporter 1124 · August 1, 2024

Serial Number 892956 was reported as accurate.

23Greenwich Supporter 249 · June 11, 2024

Serial Number 892596 was reported as accurate.

Anonymous · December 20, 2021

Serial Number 892095 was reported as accurate.

Anonymous · November 26, 2019

Serial Number 892439 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch
E. Howard Watch Co. (Keystone) Grade Series 3 Pocket Watch