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)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1143508
Grade: Series 5
Variation: Hooked Bridge Going Barrel
Model: 1907
Estimated Production Year: 1912
Run Quantity: 1,000
Grade/Model Run: 26 of 27
Grade/Model Total Production: 16,600
Variant Est. Production: 1,200 (16S-M1907-19J-ONL-A5PTI-HOOKED BRIDGE GOING BARREL)
Size: 16s
Jewels: 19j
Jewel Material: Ruby & Sapphire
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: Bridge Plate
Bridge Type: Center
Double Roller: Yes
Barrel: Going
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: Yes
Dial Feet Locations: 10.7, 24.3, 48.9
Case: Various
Run ID: 232.G26.16S150.161907M59.O140.L32.19J39
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
45.51
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
152.05
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.942%
Registry Population: 5 (0.50%)
$ Estimated Value (12 Month Change): -5.16% Analyzing 87 Sales
Research Note: #1143517: Verified with Jeweled Safety Barrel

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.


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