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Enter the serial number from the pocket watch movement below. Do not use the case number. Tips for looking up your watch

How to Find Info About Your Pocket Watch

The Pocket Watch Database has compiled data covering the major American pocket watch manufacturers and created an easy way to find information using the serial number on the watch movement. Here are a few tips to find information about your pocket watch:

  1. Always input the serial number from the pocket watch movement (the "mechanism" of the watch).
  2. Never use the serial number from the case or any other part.
  3. Always select the correct manufacturer, which is usually stamped on the watch movement or dial.
  4. If the manufacturer is not listed on the site, you may have a "private label" watch or it may not be American-made.
  5. If the serial number includes a letter, enter it along with the number when using the lookup feature.
  6. Many pocket watch case backs screw off. Others may require a dull wide blade to pry or pop the cover. Be careful not to scratch or damage the movement.
  7. Consider uploading images of your watch by creating a collection account on the website. This is compeltely free and assists in promoting research in American horology.
  8. Understand that many companies did not keep accurate or complete records. As a result, information displayed on this site may have inaccuracies. This is to be expected, and we have included an option to report inaccurate information on the result pages so the database can be continually improved.
Pocket Watch Serial Number Lookup - Hamilton, South Bend, Illinois, Rockford, Waltham & Elgin Pocket Watches
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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.

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

Grade: Series 0

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 1112898
Grade: Series 0
Variation: Arrow and Cross
Model: 1907
Estimated Production Year: 1912
Run Quantity: 2,000
Total Production: 15,950
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: Jewelled Motor
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
Quality Rating:
Dial Feet Locations: 10.7, 24.3, 48.9
U.S. Patents: 796162, 886387, 900183, 978612, 981667, 1062645
Research Note: #1112071: Reported as Marked "No. 0"
Help us improve the database: Does this info describe your movement accurately?
Why Might This Information Be Incorrect?
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Data Confidence Rating:

Verifications & Observations

1112001
Verification Serial Map
1114000
  • December 24, 2019:
    Serial Number 1112554 was reported as accurate
  • October 31, 2019:
    Serial Number 1112081 was reported as accurate
  • March 9, 2019:
    Serial Number 1113859 was reported as accurate
  • February 18, 2019:
    Serial Number 1113872 was reported as inaccurate
    Note: #1113872 is LEVER SET. All else is correct.
    Curator Response: Thanks for the report. The database has been updated accordingly.
    Changes since this report was submitted:
    Movement Setting changed from Lever or Pendant to Lever
    Railroad Grade changed from No to Yes
  • January 29, 2019:
    Serial Number 1112578 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
  • November 13, 2018:
    Serial Number 1112898 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
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E. Howard Watch Co. (Keystone) Grade Series 0 Pocket Watch