One of the questions that frequently gets asked is what is how can I date my Omega watch. Omega watches carry a serial number which is stamped on the movement for vintage models up (up to around 1980) or etched on the outside of the case for later models. For vintage models this is translates to the production date of the movement which can differ to the subsequent date when the watch was sold so it can only be used as an approximate tool only. In most cases though, the serial number provides the most accurate way to date the watch unless it also comes with the additional dealer signed paperwork. The following table can be used to date the watch within 1-2 years.
Note: After 1998 dating becomes more difficult as the serial numbers used no longer correspond with the date of manufacture.