How do I identify a vintage Hamilton watch?

To identify a vintage Hamilton watch, grab a magnifying glass and look for its model number, serial number and case number. Most timepieces produced by Hamilton will display one, two or all three of these numbers. The model and case numbers generally appear on the back of the case, and you can usually find the serial number on the lugs. You can enter these numbers into the search tool on the National Association of Watch & Clock Collectors's official website to learn about your watch's age, style name and other characteristics. If you have any difficulty, a certified appraiser or knowledgeable dealer can help you. On 1stDibs, shop an assortment of vintage Hamilton watches.