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 0 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 0

Ruby Banking Pins

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1316299
Grade: Series 0
Variation: Hooked Bridge Jeweled Banking Pins
Model: 1907
Estimated Production Year: 1916
Run Quantity: 1,000
Grade/Model Run: 28 of 29
Grade/Model Total Production: 16,500
Variant Est. Production: 5,300 (16S-M1907-23J-ONL-A5PTI-HOOKED BRIDGE JEWELED BANKING PINS)
Size: 16s
Jewels: 23j
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
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
U.S. Patents: 796162, 886387, 900183, 978612, 981667, 1062645
Case: Various
Run ID: 308.G29.16S189.161907M90.O200.L55.23J44
Database Version: v52.221
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
37.87
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
126.53
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
2.448%
Registry Population: 6 (0.60%)
$ Estimated Value (12 Month Change): -17.23% Analyzing 88 Sales
Research Note: White Alloy Train

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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 · September 29, 2023

Serial Number 1316610 was reported as accurate.

cjbrem Supporter 500 · December 10, 2022

Serial Number 1316128 was reported as accurate.

Anonymous · December 1, 2020

Serial Number 1316610 was reported as accurate.

dfchong 837 · September 18, 2020

Serial Number 1316579 was reported as accurate.

Anonymous · September 17, 2020

Serial Number 1316344 was reported as accurate.

Debben 1 · August 8, 2020

Serial Number 1316967 was reported as accurate.

Anonymous · September 11, 2019

Serial Number 1316858 was reported as accurate.

Anonymous · June 16, 2019

Serial Number 1316198 was reported as accurate.

Anonymous · April 16, 2019

Serial Number 1316788 was reported as accurate.

Anonymous · April 12, 2019

Serial Number 1316624 was reported as accurate.

E. Howard Watch Co. (Keystone) Grade Series 0 Pocket Watch