Cases and watches were often made by different companies and each usually has its own serial number. Even if we knew when the parts were made, we are not sure when the watch was assembled. Rotate a screw-down case back counterclockwise with the palm of your hand. This database only dates back to certain period so anything vintage or retro might not search. Remove the case back (of either type) from the watch. Use a jeweler's loupe to inspect the movement for a serial number. OMEGA. This is an example only.

Do NOT use the case serial number! Seiko watches have a 6 or 7 character serial number on their casebacks.

You usually have to take the back off the watch case to see the movement serial number which may appear anywhere on the watch movement.

Pulsar 2018-05-24T14:36:12+00:00 Where do I find the serial number on a Pulsar generator?

You can use the Seiko serial number in conjunction with the movement number to calculate the year of manufacture. The rare models like the P1 and the solid gold Pulsar/Time are well documented but the mass-produced models are impossible to document. Use the movement serial number. If you face the front of the unit, it is engraved on the engine just below the operating panel. Omega is another example of a watch that puts the watch model number inside of the case.

Omega watches do have a serial on the outside of the case however, that will search in Omega’s database and correspond with a model number.

In general, serial numbering gives little clue as to when the watch was assembled. Does the case's serial number correlate to quartz serial Can serial numbers of Pulsar watches be found in some other places than back of the case? The second character can be a letter but the rest are all numbers.

Serial numbers can range from six to nine digits and may include a combination of letters and numbers.