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

Hamilton Pocket Watch Trademarks

The following gallery contains trademarks that were issued or assigned to Hamilton or individuals known to be working for the company at the time. Not all designs were fully implemented into production.

Hamilton

Patent Number:203657
Description:Hamilton
Inventor:Hamilton Watch Co
Charles F. P. Miller
Patent Date:Aug 22, 1925
Patent Type:Trademark

Secometer

Patent Number:266752
Description:Secometer
Inventor:Hamilton Watch Co
Frank C. V. Beckwith
Patent Date:Feb 4, 1930
Patent Type:Trademark

Elinvar

Patent Number:275240
Description:Elinvar
Inventor:Hamilton Watch Co
C. M. S. Kendig
Patent Date:Sep 16, 1930
Patent Type:Trademark

Invarel

Patent Number:275239
Description:Invarel
Inventor:Hamilton Watch Co
C. M. S. Kendig
Patent Date:Sep 16, 1930
Patent Type:Trademark

Hamilton

Patent Number:368840
Description:Hamilton
Inventor:Hamilton Watch Co
Charles C. S. Smith
Patent Date:Jul 4, 1939
Patent Type:Trademark

Railroad Timekeeper

Patent Number:373859
Description:Railroad Timekeeper
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Dec 26, 1939
Patent Type:Trademark

Hamilton

Patent Number:373853
Description:Hamilton
Inventor:Hamilton Watch Co
Charles C. V. S. Smith
Patent Date:Dec 26, 1939
Patent Type:Trademark

Railway Special

Patent Number:373860
Description:Railway Special
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Dec 26, 1939
Patent Type:Trademark

Hamilton

Patent Number:379979
Description:Hamilton
Inventor:Hamilton Watch Co
Charles C. S. Smith
Patent Date:Aug 6, 1940
Patent Type:Trademark

Medallion

Patent Number:380409
Description:Medallion
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Aug 20, 1940
Patent Type:Trademark

Aurium

Patent Number:380823
Description:Aurium
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Sep 3, 1940
Patent Type:Trademark

Hamilton

Patent Number:396381
Description:Hamilton
Inventor:Hamilton Watch Co
Charles C. S. Smith
Patent Date:Jul 14, 1942
Patent Type:Trademark

Coral

Patent Number:408045
Description:Coral
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Jul 18, 1944
Patent Type:Trademark

Howard

Patent Number:413236
Description:Howard
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Apr 17, 1945
Patent Type:Trademark

Hamilton

Patent Number:436762
Description:Hamilton
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Feb 17, 1948
Patent Type:Trademark

Seckron

Patent Number:438852
Description:Seckron
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:May 11, 1948
Patent Type:Trademark

The Watch Of Railroad Accuracy

Patent Number:503557
Description:The Watch Of Railroad Accuracy
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Oct 26, 1948
Patent Type:Trademark

Hamilton

Patent Number:442530
Description:Hamilton
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Apr 26, 1949
Patent Type:Trademark

Hamilton

Patent Number:443413
Description:Hamilton
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Sep 27, 1949
Patent Type:Trademark

Dynavar

Patent Number:519122
Description:Dynavar
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Dec 20, 1949
Patent Type:Trademark

Dynavar

Patent Number:524236
Description:Dynavar
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Apr 18, 1950
Patent Type:Trademark

Hamilton C L D

Patent Number:528253
Description:Hamilton C L D
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Aug 1, 1950
Patent Type:Trademark

Hamilton Elinvar Extra

Patent Number:528956
Description:Hamilton Elinvar Extra
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Aug 15, 1950
Patent Type:Trademark

Railway Special

Patent Number:533870
Description:Railway Special
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Nov 28, 1950
Patent Type:Trademark

Hamilton Elinvar Extra

Patent Number:546530
Description:Hamilton Elinvar Extra
Inventor:Hamilton Watch Co
Charles C. V. Smith
Patent Date:Aug 14, 1951
Patent Type:Trademark

"railroad Yardman"

Patent Number:581520
Description:"railroad Yardman"
Inventor:Hamilton Watch Co
Lowell F. V. Halligan
Patent Date:Oct 27, 1953
Patent Type:Trademark

Illinois

Patent Number:584501
Description:Illinois
Inventor:Hamilton Watch Co
Robert B. V. Thompson
Patent Date:Jan 12, 1954
Patent Type:Trademark

Stemguard

Patent Number:598050
Description:Stemguard
Inventor:Hamilton Watch Co
Patent Date:Nov 9, 1954
Patent Type:Trademark

Lady Hamilton

Patent Number:607276
Description:Lady Hamilton
Inventor:Hamilton Watch Co
Patent Date:Jun 14, 1955
Patent Type:Trademark

Lady Hamilton

Patent Number:607681
Description:Lady Hamilton
Inventor:Hamilton Watch Co
Patent Date:Jun 21, 1955
Patent Type:Trademark

Service By Hamilton

Patent Number:611224
Description:Service By Hamilton
Inventor:Hamilton Watch Co
Patent Date:Aug 23, 1955
Patent Type:Trademark

Hamilton Illinois

Patent Number:618197
Description:Hamilton Illinois
Inventor:Hamilton Watch Co
Patent Date:Dec 17, 1955
Patent Type:Trademark

Dynavar

Patent Number:632221
Description:Dynavar
Inventor:Hamilton Watch Co
Patent Date:Aug 7, 1956
Patent Type:Trademark

Nautilus

Patent Number:633162
Description:Nautilus
Inventor:Hamilton Watch Co
Patent Date:Aug 21, 1956
Patent Type:Trademark

Railroad Timekeeper

Patent Number:639643
Description:Railroad Timekeeper
Inventor:Hamilton Watch Co
Patent Date:Jan 8, 1957
Patent Type:Trademark

Stavar

Patent Number:650898
Description:Stavar
Inventor:Hamilton Watch Co
Patent Date:Aug 27, 1957
Patent Type:Trademark

The Watch Of Railroad Accuracy

Patent Number:653759
Description:The Watch Of Railroad Accuracy
Inventor:Hamilton Watch Co
Patent Date:Oct 29, 1957
Patent Type:Trademark

"h With A Bar"

Patent Number:656801
Description:"h With A Bar"
Inventor:Hamilton Watch Co
Patent Date:Jan 7, 1958
Patent Type:Trademark

"h With A Bar"

Patent Number:658256
Description:"h With A Bar"
Inventor:Hamilton Watch Co
Patent Date:Feb 11, 1958
Patent Type:Trademark

Weatherproof

Patent Number:712494
Description:Weatherproof
Inventor:Hamilton Watch Co
Patent Date:Mar 14, 1961
Patent Type:Trademark

Allure

Patent Number:721598
Description:Allure
Inventor:Hamilton Watch Co
Patent Date:Sep 19, 1961
Patent Type:Trademark

Kwik-chek

Patent Number:721894
Description:Kwik-chek
Inventor:Hamilton Watch Co
Patent Date:Sep 26, 1961
Patent Type:Trademark

Hamilton

Patent Number:741279
Description:Hamilton
Inventor:Hamilton Watch Co
Patent Date:Nov 27, 1962
Patent Type:Trademark

505

Patent Number:742350
Description:505
Inventor:Hamilton Watch Co
Patent Date:Dec 18, 1962
Patent Type:Trademark

Biggs Hamilton

Patent Number:754129
Description:Biggs Hamilton
Inventor:Hamilton Watch Co
Patent Date:Aug 6, 1963
Patent Type:Trademark

Lady Lancaster

Patent Number:763084
Description:Lady Lancaster
Inventor:Hamilton Watch Co
Patent Date:Jan 14, 1964
Patent Type:Trademark

Lavelle

Patent Number:790503
Description:Lavelle
Inventor:Hamilton Watch Co
Patent Date:Jun 1, 1965
Patent Type:Trademark

Huguenin

Patent Number:791209
Description:Huguenin
Inventor:Hamilton Watch Co
Patent Date:Jun 15, 1965
Patent Type:Trademark