Rolex Oyster Case Listings 1926 – 2003 Rolex watches are dated by a serial number which corresponds to the actual manufacture date.
The date of market introduction may vary however, so expect to add 6 to 18 months.
Rolex engraves a unique, 5 to 8 digit serial number to every watch it makes that helps determine the approximate date, or year of production for that particular watch.
These sets of numbers, for example 28000 for the year 1926 or Z000001 for year 2006, are inscribed by machine on the side of the watch case between the lugs at 6 o’clock.
A unique Rolex serial number is recorded on each watch, giving it a unique set of numerals for the purpose of identification and record keeping, much like any other product.
Much like jewelry, the condition of a Rolex is much more important in value than the year it is thought to be manufactured, with exceptions of course.To access these numbers, you will need to remove the bracelet.The numbers will then be visible on the case where the bracelet joined it.But any chart or list you may find is a guesstimate at best and can only give you the roundabout date of when it was manufactured at the Rolex factory.They will be close, but it is quite impossible to know for sure with each individual watch.