YSL have brought out a handful of their classics as limited editions. Y is one of them (French pronunciation: ee-grek, not why.)
I could smell this for hours; quite a lot of fruit, a hint of chypre in the background - then powdery. Designed for women, but I wouldn't have guessed. It came out in 1964. This bottle looks like 70s or 80s packaging, but let us know if you recognise it from the picture. It smells as fresh as the day it was made, and it's only just been opened.
Safety stuff: Again, this is from before regulations, so use it wisely.