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: 1108681
Grade: Series 5
Variation: Hooked Bridge Jeweled Barrel
Model: 1907
Estimated Production Year: 1912
Run Quantity: 1,000
Grade/Model Run: 22 of 27
Grade/Model Total Production: 16,600
Variant Est. Production: 9,800 (16S-M1907-19J-ONL-A5PTI-HOOKED BRIDGE JEWELED 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: Jeweled Safety
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: 202.G22.16S133.161907M44.O117.L22.19J34
Database Version: v52.335
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
Registry Population: 10 (1.00%)
$ Estimated Value (12 Month Change): -13.18% Analyzing 89 Sales
Research Note: #1108165 and #1108910: Reported as Marked "No. 5" #1108086 and #1108157: Verified as Marked "No. 5", #1108987: Verified as Not Marked "No. 5."

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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.

Mobilaero Top Contributor Supporter 299 · April 27, 2024

Serial Number 1108681 was reported as accurate.

cjbrem Supporter 578 · March 24, 2024

Serial Number 1108815 was reported as accurate.

Anonymous · December 16, 2022

Serial Number 1108891 was reported as accurate.

Anonymous · March 5, 2021

Serial Number 1108887 was reported as accurate.

Anonymous · January 8, 2019

Serial Number 1108987 was reported as accurate.

Anonymous · October 18, 2018

Serial Number 1108626 was reported as accurate.

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