Watch Identifier
How to find your watch's reference number
The reference number, also called the model number, is usually engraved on the caseback, between the lugs under the bracelet, or inside the caseback. It also appears on the warranty card and sales papers.
Reference number vs serial number
The reference identifies the model and configuration: case, dial, bezel, metal. Every watch of that version shares it. The serial identifies your individual watch and can help date it. You need the reference to look up specifications and prices.
Where to look
- Outside of the caseback. The most common place. Seiko, for example, engraves a caliber-and-case code alongside a serial.
- Between the lugs. Some brands, including older Rolex models, engrave the reference on the case side hidden by the bracelet at twelve o'clock, with the serial at six.
- Inside the caseback. Common on vintage Swiss watches. Leave opening it to a watchmaker.
- Papers, card and box label. The quickest route if you have them.
If you can't find a number
Removing a bracelet without the right tool scratches the lugs, so don't force it. A dial photo is often enough to narrow the reference to a short list, which you can then confirm against the watch.
Do it with Watch Identifier
- Photograph the dial in Watch Identifier, then the caseback so any engraved numbers are in frame.
- Read the likely reference and its confidence level in the report.
- Confirm it against the engraving or your papers.
Free to identify one watch a day on iPhone and iPad.
Identifications and valuations are AI-generated estimates for informational purposes only. Watch Identifier is not a professional appraisal or an authentication service.