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
  Serial Number:
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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.

Grade: Series 3

Manufacturer: E. Howard Watch Co. (Keystone)
Manufacturer Location: Waltham, Massachusetts
Movement Serial Number: 929136
Grade: Series 3
Model: 1905
Estimated Production Year: 1909
Run Quantity: 3,000
Total Production: 61,500
Size: 16s
Jewels: 17j
Jewel Material: Ruby & Sapphire
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Circular
Movement Setting: Pendant
Plate: 3/4 Plate
Regulator: Reed
Hairspring: Breguet
Pallet Jewel Material: Sapphire
Standard Dial Type: Single-Sunk
Adjusted: Yes
Adjusted to Position: Yes
Adjusted # of Positions: 3
Adjusted to Temperature: Yes
Adjusted to Isochronism: Yes
Railroad Grade: No
Dial Feet Locations: 10.7, 24.3, 48.9
U.S. Patents: 781263, 796162, 886387, 900183, 992013, 971496, 978612, 981667
Research Note: #927004: Reported with Checkerboard Pattern. #927824: Reported as Lever-Set. #928968 and #929993: Reported as Hunting instead of Openface.
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Why Might This Information Be Incorrect?
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Data Confidence Rating:

Verifications & Observations

Verification Serial Map
  • August 9, 2020:
    Serial Number 927285 was reported as accurate
  • April 17, 2020:
    Serial Number 928219 was reported as accurate
  • November 27, 2019:
    Serial Number 928250 was reported as accurate
  • September 19, 2019:
    Serial Number 929477 was reported as accurate
  • September 7, 2019:
    Serial Number 929209 was reported as accurate
  • August 14, 2019:
    Serial Number 927939 was reported as accurate
  • February 23, 2019:
    Serial Number 929780 was reported as accurate
  • January 27, 2019:
    Serial Number 927030 was reported as accurate
  • December 17, 2018:
    Serial Number 929509 was reported as accurate
  • November 26, 2018:
    Serial Number 928711 was reported as accurate
  • November 7, 2018:
    Serial Number 928671 was reported as accurate