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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
  Serial Number:
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Grade: 999E

Manufactured by Hamilton

Manufacturer: Ball - Hamilton
Movement Serial Number: 170107
Grade: 999E
Model: 1
Estimated Production Year: 1902
Size: 18s
Jewels: 17j
Jewel Material: Ruby
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Circular Damascening Pattern
Movement Setting: Lever
Plate: Full Plate
Regulator: Ball
Pallet Jewel Material: Sapphire
Adjusted: Yes
Railroad Grade: Yes
Movement Markings: Ball’s Standard, Railroad Watch Co.
Research Note: #170354: Verified as 999E Type 3
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Data Confidence Rating:

Verifications & Observations

  • January 23, 2020:
    Serial Number 170009 was reported as accurate
  • October 21, 2019:
    Serial Number 170094 was reported as accurate
  • March 26, 2019:
    Serial Number 170107 was reported as inaccurate
    Note: My #170107 is a Single Roller marked "Ball Watch
    Co."
  • March 17, 2019:
    Serial Number 170107 was reported as accurate
  • March 5, 2019:
    Serial Number 170354 was reported as accurate
  • October 19, 2018:
    Serial Number 170354 was reported as inaccurate
    Note: Mine is a type 3 999E. Marked
    Adjusted
    Single roller
    Ball& co. Cleveland.
    Changes since this report was submitted:
    Grade changed from 999b to 999e
    Plate changed from 3/4 to Full
  • December 29, 2015:
    Serial Number 170301 was reported as accurate
    Changes since this report was submitted:
    Grade changed from 999b to 999e
    Plate changed from 3/4 to Full
  • June 20, 2014:
    Serial Number 170033 was reported as accurate
    Changes since this report was submitted:
    Grade changed from 999b to 999e
    Plate changed from 3/4 to Full
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