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 2 Pocket Watch

E. Howard Watch Co. (Keystone)

Grade: Series 2

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1122614
Grade: Series 2
Variation: Ser. 2
Model: 1907
Estimated Production Year: 1912
Run Quantity: 800
Grade/Model Run: 3 of 7
Grade/Model Total Production: 6,500
Variant Est. Production: 3,800 (16S-M1907-17J-ONL)
Size: 16s
Jewels: 17j
Jewel Material: Ruby & Sapphire
Jewel Setting: Raised Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Lever
Plate: Bridge Plate
Bridge Type: Center
Double Roller: Yes
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: 220.G14.16S142.161907M53.O134.L30.17J113
Database Version: v52.219
Advanced Metrics
PWDB Absolute Rarity Index:
Scoped for Grade/Size/Model/Configuration
16.46
PWDB Relative Rarity Index:
Rarity within Manufacturer - Scoped for Grade/Size/Model/Configuration
54.95
Share of Production:
Share within Manufacturer - Scoped for Grade/Size/Model/Configuration
1.064%
Registry Population: 5 (0.63%)
Research Note: #1122867: Reported as Lever-Set. #1123252: Verified as Lever-Set.

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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 · October 9, 2022

Serial Number 1123263 was reported as accurate.

Jstork69 13 · November 19, 2021

Serial Number 1122614 was reported as accurate.

TWW369 7 · September 12, 2021

Serial Number 1123252 was reported as inaccurate.

Note: Lever Set
Curator Response: Thanks for the report. The database has been updated accordingly.
Changes since this report was submitted:
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes

WatchFan63 Supporter 4 · August 2, 2020

Serial Number 1122959 was reported as accurate.

bunnofnickle 67 · July 1, 2020

Serial Number 1122733 was reported as accurate.

Anonymous · September 1, 2019

Serial Number 1122736 was reported as accurate.

Anonymous · September 26, 2018

Serial Number 1122867 was reported as inaccurate.

Note: Lever set.
Changes since this report was submitted:
Movement Setting changed from Pendant to Lever
Railroad Grade changed from No to Yes
E. Howard Watch Co. (Keystone) Grade Series 2 Pocket Watch