Use your serial number to identify the production year of your watch by using a serial number matrix below. A unique serial number makes it possible to trace back the origin of any watch and identify model, calibre and year in which it was produced. Introduction on how to find & use serial numbers A serial number is a unique number attached to one specefic watch. While your are at it remember to note the calibre number of your watch it may come in handy some day. On most vintag Tissot watches you will be able to find the serial number engraved into the watch movement. Later on the serial numbers were made easier to locate.

The very early Tissot watches had the serial number engraved on the back site of the dial. While seaching for the serial number please remember to enjoy the sight of your Longines watch movement. When you have got the serial number then look it up in our Longines serial number matrix. To put a date of production on your vintag Longines watch you have to locate the serial number which most often is found on the in- & out-site of the back case. Instead Eterna made sure we can date watches since their calibers were only used in short periods of time. In some cases, such as the watches produced by the brand Eterna, serial numbers were not used as markers to know the year of origin.

One serial number indicates in which year or periode the watch was produced while the other number (the reference number) indicates which model or serie the specific watch belongs to. Together with a reference number, the brand Omega placed their serial numbers on the inside of the backcase. Though in the periode dating from 1958 to 1974 the reference number on Certina watch carried an encrypted message giving away, which calibre the watch was equipped with, which material the case was made from and which watch model you are dealing with.

The two numbers serves the same pourposes as explained in the Omega chapter above-written. While Omega keeps the serial number on the inside of the backcase Certina leaves the serial number visible on the out site of the watch back case accompanied with a reference. If you want to know which year your vintage watch was produced? – Then take a closer look at ” Serial numbers by year”. This page will enable you to track down the production year of your vintage watch.

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