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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Company Profile: Jacob Karr

Location: Washington, DC

Years of Operation: 1857-1895

Specialty: Invented the "American Chronometer"

Production Sizes: 18s

Company Timeline
The Washington Times, Washington, District of Columbia
Saturday, May 11, 1895


In 1857, German immigrant Jacob Karr starts his business in Washington D.C. as a jeweler.

U.S. Patent #44317

September 20, 1864

Jacob Karr is issued a patent for his chronometer invention, designated as the "American Chronometer."

National Republican, Washington, District of Columbia
Friday, December 13, 1867


By the late 1860s, Jacob Karr had established himself as a reputable jeweler and inventor.

The Morning Times, Washington, District of Columbia
Friday, September 20, 1895


Jacob Karr retires from the jewelry business.

The Washington Post, Washington, District of Columbia
Thursday, March 22, 1917

March 21, 1917

Jacob Karr dies at his residence in Washington D.C.