How do I identify my Longines watch?

To identify a Longines watch, check for a serial number on the back. Many timepieces produced by the luxury watchmaker feature serial numbers on their cases, and you can search trusted online resources to determine the model name and date once you find it. A small number of Longines watches have the serial number engraved inside the case. If yours is one, an experienced jeweler can open the watch and check the number for you. Shop a range of Longines watches on 1stDibs.