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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:
Need to replace a watch crystal? Use our new crystal size guide to find the proper fit.

Grade: 4992B

Manufacturer: Hamilton
Manufacturer Location: Lancaster, Pennsylvania
Movement Serial Number: 4C133421
Grade: 4992B
Model: 5
Estimated Production Year: 1950
Run Quantity: 15,000
Total Production: 144,995
Size: 16s
Jewels: 22j
Movement Configuration: Openface
Movement Finish: Nickel
Movement Setting: Pendant
Plate: 3/4 Plate
Adjusted: Yes
Adjusted # of Positions: 6
Adjusted to Temperature: Yes
Railroad Grade: No
Dial Feet Locations: 22.3, 38.0, 57.1
Hamilton 16s Dial Feet Research
Data Research: 1953 Hamilton Serial List
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Data Confidence Rating:

Verifications & Observations

4C120001
Verification Serial Map
4C135000
  • November 9, 2019:
    Serial Number 4C125362 was reported as accurate
  • October 7, 2019:
    Serial Number 4C121127 was reported as accurate
  • June 15, 2019:
    Serial Number 4C123914 was reported as accurate
  • June 7, 2019:
    Serial Number 4C121675 was reported as accurate
  • February 12, 2019:
    Serial Number 4C121303 was reported as accurate
  • February 12, 2019:
    Serial Number 4C120171 was reported as accurate
  • November 1, 2018:
    Serial Number 4C131301 was reported as accurate
  • October 9, 2018:
    Serial Number 4C126623 was reported as accurate
  • June 25, 2018:
    Serial Number 4C132578 was reported as accurate
  • June 4, 2018:
    Serial Number 4C126612 was reported as accurate
  • May 15, 2018:
    Serial Number 4C124258 was reported as accurate
  • April 21, 2018:
    Serial Number 4C125205 was reported as accurate
  • August 20, 2017:
    Serial Number 4C125205 was reported as accurate
  • May 15, 2017:
    Serial Number 4C130668 was reported as accurate
  • March 19, 2017:
    Serial Number 4C125544 was reported as accurate
  • March 5, 2017:
    Serial Number 4C121810 was reported as accurate
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