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

Manufacturer: E. Howard Watch Co. (Keystone) Question Mark
Manufacturer Location: Waltham, Massachusetts Question Mark
Movement Serial Number: 1116869 Question Mark
Grade: Series 0 Question Mark
Variation: Members Only Data Question Mark
Model: 1907 Question Mark
Estimated Production Year: Members Only Data Question Mark
Run Quantity: Members Only Data Question Mark
Grade/Model Run: Members Only Data Question Mark
Grade/Model Total Production: Members Only Data Question Mark
Variant Est. Production: Members Only Data Question Mark
Size: 16s Question Mark
Jewels: 23j Question Mark
Jewel Material: Members Only Data Question Mark
Jewel Setting: Members Only Data Question Mark
Movement Configuration: Openface Question Mark
Movement Finish: Nickel Question Mark
Movement Setting: Lever Question Mark
Wind Mechanism: Pendant Question Mark
Plate: Bridge Plate Question Mark
Bridge Type: Center Question Mark
Double Roller: Yes Question Mark
Barrel: Going Question Mark
Regulator: Members Only Data Question Mark
Hairspring: Members Only Data Question Mark
Standard Dial Type: Members Only Data Question Mark
Adjusted: Members Only Data Question Mark
Adjusted to Position: Members Only Data Question Mark
Adjusted # of Positions: Members Only Data Question Mark
Adjusted to Temperature: Members Only Data Question Mark
Adjusted to Isochronism: Members Only Data Question Mark
Railroad Grade: Members Only Data Question Mark
U.S. Patents: Members Only Data Question Mark
Dial Feet Locations: Members Only Data Question Mark
Movement Markings: Members Only Data
Case: Various Question Mark
Run ID: 222.G21.16S150.161907M50.O143.L36.23J28 Question Mark
Database Version: v52.642 Question Mark
Advanced Metrics
Members Only Data. Login or create a free account to unlock.
Registry Population:
Scoped for This Run Only
9 (1.80%) Question Mark
$ Estimated Value (12 Month Change): 0.16% Analyzing 96 Sales Question Mark
Research Note: Ruby Banking Pins
20 Additional Member-Only Data Points Available

The following information is unlocked with a free account:

Variation, Estimated Production Year, Run Quantity, Grade/Model Run, Grade/Model Total Production, Variant Est. Production, Jewel Material, Jewel Setting, Regulator Type, Hairspring, Standard Dial Type, Adjustments, Adjusted to Position, Positional Adjustments, Temperature Adjustments, Isochronism Adjustments, Railroad Grade Designation, U.S. Patents, Dial Feet Locations, Movement Markings

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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.


avpalermo Supporter 691 · June 26, 2024

Serial Number 1116846 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · January 14, 2024

Serial Number 1116512 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · September 16, 2022

Serial Number 1116892 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · August 9, 2021

Serial Number 1116687 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes

Anonymous · March 30, 2021

Serial Number 1116832 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes

bunnofnickle 67 · July 2, 2020

Serial Number 1116989 was reported as inaccurate.

Note: The series 0 when lever set was railroad grade
Curator Response: Correct. The setting mechanism for this particular run is ambiguous. Lever-set would have been approved for railroad service.
Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes

bunnofnickle 67 · July 2, 2020

Serial Number 1116989 was reported as accurate.

Changes since this report was submitted:
Movement Setting changed from Lever or Pendant to Lever
Railroad Grade changed from No to Yes
E. Howard Watch Co. (Keystone) Grade Series 0 Pocket Watch