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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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Hamilton Grade 940 Research

Hamilton Grade 940 Advertisement from 1916

A.C. Becken Illustrated Catalogue and Price List

Publication Year: 1916

Grade:940
Manufacturer:Hamilton
Size:18s
Configuration:Openface
Setting:Lever
Finish:Nickel
Finish Description:Gilt Lettering, Beautifully and Elegantly Damaskeened
Jewels:21j
Jewel Count Marked:Yes
Jewel Setting:Gold Screw Settings
Jewel Description:21 Extra Fine Ruby Jewels in Gold Settings
Adjusted:Yes
Adjusted Marked:Yes
Adjusted To Temperature:Yes
Adjusted To Isochronism:Yes
Adjusted # Positions:5
Adjusted Description:Adjusted to Temperature, Isochronism, and Five Positions
Regulator:Micrometric Regulator
Hairspring:Breguet
Balance:Compensation
Markings:Hamilton Watch Co.
Lancaster, Pa.
940
21 Jewels
Motor Barrel
Adjusted 5 Positions
Double Roller
Movement Font Style:Serif (decorative)
Trim Lettering Color:Gilt
Dial Type:Double-sunk
Description:No. 940 Open Face. No. 941 Hunting.
Nickel, 21 Extra Fine Ruby Jewels in Gold Settings, Patent Motor Barrel, Adjusted to Temperature, Isochronism and Five Positions, Double Roller Escapement, Steel Escape Wheel, Breguet Hairspring, Compensation Balance, Patent Micrometric Regulator, Double Sunk Dial, Gilt Lettering, Beautfiully and Elegantly Damaskeened.
$28.00
Price:$28.00
Hamilton Grade 940 Advertisement from 1919

The Hamilton Time Book (1919)

Publication Year: 1919

Page: 6

Grade:940
Manufacturer:Hamilton
Size:18s
Configuration:Openface
Finish:Nickel
Finish Description:Beautifully and Elegantly Damaskeened, Gilt Lettering
Jewels:21j
Jewel Count Marked:Yes
Jewel Setting:Gold Screw Settings
Jewel Description:21 Extra Fine Ruby Jewels in Gold Settings
Adjusted:Yes
Adjusted Marked:Yes
Adjusted To Temperature:Yes
Adjusted To Isochronism:Yes
Adjusted # Positions:5
Adjusted Description:Adjusted to Temperature, Isochronism and Five Positions
Railroad Grade:Yes
Regulator:Patent Micrometric Regulator
Hairspring:Breguet
Balance:Compensation
Markings:Hamilton Watch Co.
Lancaster, Pa.
Motor Barrel
940
Adjusted 5 Positions
21 Jewels
Double Roller
Safety Pinion
Movement Font Style:Serif (decorative)
Trim Lettering Color:Gilt
Dial Type:Double-sunk
Description:The 18-Size Railroad Timekeeper
of America

No. 940 - 18-size, open face, 21 extra fine ruby jewels in gold settings, nickel, patent motor barrel, adjusted to temperature, isochronism and five positions, double roller escapement, steel escape wheel, Breguet hairspring, compensation balance, patent micrometric regulator, double-sunk dial, gilt lettering, beautifully and elegantly damaskeened.