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 5 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 5

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 1143508 Question Mark
Grade: Series 5 Question Mark
Variation: Hooked Bridge Going Barrel Question Mark
Model: 1907 Question Mark
Estimated Production Year: 1909 Question Mark
Run Quantity: 1,000 Question Mark
Grade/Model Run: 25 of 26 Question Mark
Grade/Model Total Production: 16,400 Question Mark
Variant Est. Production: 1,200 (16S-M1907-19J-ONL-A5PTI-HOOKED BRIDGE GOING BARREL) Question Mark
Size: 16s Question Mark
Jewels: 19j Question Mark
Jewel Material: Ruby & Sapphire Question Mark
Jewel Setting: Burnished Jewels Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: Center Question Mark
Double Roller: Yes Question Mark
Barrel: Going 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
Movement Markings: E. Howard Watch Co.
Boston U.S.A.
Series 5
19 Jewels
[Triangle in Arrow]
Pat'd.
Extra Adjustment
Five Positions
Temperature
Case: Various Question Mark
Run ID: 238.G26.16S159.161907M57.O156.L40.19J39 Question Mark
Database Version: v52.467 Question Mark
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
43.95 Question Mark
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
154.56 Question Mark
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.794% Question Mark
Registry Population:
Scoped for This Run Only
5 (0.50%) Question Mark
$ Estimated Value (12 Month Change): -1.15% Analyzing 96 Sales Question Mark
Research Note: #1143517: Verified with Jeweled Safety Barrel

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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.


Anonymous · December 4, 2023

Serial Number 1144489 was reported as accurate.

Anonymous · June 30, 2021

Serial Number 1144299 was reported as accurate.

Anonymous · October 21, 2019

Serial Number 1143929 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 5 Pocket Watch