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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 "guts" of the watch).
  2. Never use the serial number from the case or any other part.
  3. If the serial number includes a letter, enter it along with the number when using the lookup feature.
  4. 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.
  5. Always select the correct manufacturer, which is usually stamped on the watch movement.
  6. If the manufacturer is not listed on the site, you may have a "private label" watch or it may not be American-made.
  7. 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: 940

Special

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 505178
Grade: 940
Model: 1
To Finishing Dept: Feb 14, 1906
Run Quantity: 3,000
Total Production: 210,596
Size: 18s
Jewels: 21j
Jewel Material: Ruby
Jewel Setting: Gold Settings (Screw-Set)
Movement Configuration: Openface
Movement Finish: Nickel
Finish Pattern: Damaskeened
Movement Inlay Color: Gilt
Movement Setting: Lever
Plate: Full Plate
Barrel: Going
Regulator: Goldthwait
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
Dial Feet Locations: 2.6, 18.0, 38.2
U.S. Patents: 832672, 427072
Data Research: 1953 Hamilton Serial List
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Data Confidence Rating:

Verifications & Observations

504001
Verification Serial Map
507000
  • April 7, 2019:
    Serial Number 504948 was reported as accurate
  • January 17, 2019:
    Serial Number 505263 was reported as accurate
  • November 2, 2018:
    Serial Number 506085 was reported as accurate
  • July 28, 2018:
    Serial Number 505763 was reported as accurate
  • July 28, 2018:
    Serial Number 505763 was reported as accurate
  • June 27, 2018:
    Serial Number 505763 was reported as accurate
  • June 24, 2018:
    Serial Number 504157 was reported as accurate
  • June 20, 2018:
    Serial Number 505763 was reported as accurate
  • January 31, 2018:
    Serial Number 506976 was reported as accurate
  • November 22, 2017:
    Serial Number 505178 was reported as accurate
  • November 5, 2017:
    Serial Number 506758 was reported as accurate
  • July 20, 2017:
    Serial Number 505662 was reported as inaccurate
    No further details were submitted with the report.
  • February 1, 2017:
    Serial Number 506732 was reported as accurate
  • December 22, 2016:
    Serial Number 506608 was reported as accurate
  • December 19, 2016:
    Serial Number 505982 was reported as accurate
  • August 18, 2016:
    Serial Number 505982 was reported as accurate
  • July 1, 2016:
    Serial Number 506401 was reported as inaccurate
    Note: Movement marked SPECIAL.
  • May 19, 2016:
    Serial Number 504737 was reported as accurate
  • April 20, 2016:
    Serial Number 504866 was reported as accurate
  • April 8, 2016:
    Serial Number 504221 was reported as accurate
  • April 3, 2016:
    Serial Number 504866 was reported as accurate
  • March 9, 2016:
    Serial Number 504893 was reported as accurate
  • February 13, 2016:
    Serial Number 506969 was reported as accurate
  • October 25, 2015:
    Serial Number 504803 was reported as accurate
  • September 25, 2015:
    Serial Number 505783 was reported as accurate
  • June 11, 2015:
    Serial Number 506401 was reported as inaccurate
    Note: Your information is accurate as far as it goes but
    the Notes section might wish to add that there are
    gold movement screws and that the movement is
    marked SPECIAL in gilt lettering.
  • March 18, 2015:
    Serial Number 504893 was reported as accurate
  • December 31, 2014:
    Serial Number 504656 was reported as accurate
  • May 30, 2014:
    Serial Number 504474 was reported as accurate
  • January 26, 2014:
    Serial Number 505914 was reported as accurate
  • January 26, 2014:
    Serial Number 505914 was reported as accurate
  • November 30, 2013:
    Serial Number 506732 was reported as accurate
  • November 30, 2013:
    Serial Number 506732 was reported as accurate
  • November 28, 2013:
    Serial Number 506170 was reported as accurate
  • November 1, 2013:
    Serial Number 505192 was reported as accurate
  • November 1, 2013:
    Serial Number 505142 was reported as accurate
  • October 25, 2013:
    Serial Number 505142 was reported as accurate
  • October 25, 2013:
    Serial Number 0505951 was reported as accurate
  • September 16, 2013:
    Serial Number 504157 was reported as accurate
  • September 16, 2013:
    Serial Number 504157 was reported as accurate
  • August 20, 2013:
    Serial Number 504157 was reported as accurate
  • April 21, 2013:
    Serial Number 505142 was reported as accurate
  • February 10, 2013:
    Serial Number 506183 was reported as accurate
  • November 17, 2012:
    Serial Number 504893 was reported as accurate
  • June 27, 2012:
    Serial Number 504966 was reported as accurate
  • May 13, 2012:
    Serial Number 504771 was reported as accurate
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