I found one of those pre-pressurized bottles from the 1980's, and I think the contents were in pretty good condition. Anyway, it still smelled great!
After the initial green blast and similarities to Cabochard subsided, what remained was a bold, soapy and somewhat spicy floral. Actually, I was mislead a bit by the first few minutes, which I liked a lot... but the drydown was very different.
Although Palomar54 felt Alix Gres was a fruity floral, that style tends to be so overtly fruity nowadays, some vintage fragrance hounds might inadvertently be mislead. But make no mistake... the wrap-up like Ivoire with hints of Opium. I am tempted to say Krizia's Teatro Alla Scala, but sadly I don't have a reference good sample to compare.
But you get the picture. This is a big fragrance of the old school style.