(note : this is the RAW version written by Andre in June 2016; pictures added later )
There are literally dozens of versions of the main perfumes by Jean Paul Gaultier ("Classique", "Le Male", etc). Since most of the perfumes are "Limited Editions" and/or "Special Editions for Collectors", it can be quite easy to know the year of production. Otherwise, you have to use to some tricks.
Google+