Would it be an unforgivable cliché to say that Jean Patou's 1929 Moment Supreme smells very French? It's the lavender, of course, and that "real perfume" base that goes from a rich amber (tonka bean maybe? a pungent ylang-ylang?) to an almost animalic. The very old bottle of vintage Moment Supreme makes me think it was created as Patou's answer to Guerlain's Jicky. The lavender over an oriental base is a similar theme, as is the unisex vibe.
The bottle of vintage parfum I have has lost all the bergamot it was supposed to have in its top notes, even though I bought it sealed (it was such a thrill to open the pristine packaging). The lavender is very sharp and spicy, though, and smells very much alive. The story is in the base notes- a gorgeous sweet and dirty musk that lurks behind the soft ambery notes. It lasts for several hours, warming up and softening even more on the skin.
I also have a mini Moment Supreme in EDT as a part of the Ma Collection boxed set. It's much newer and smells very fresh. The bergamot is fully there and the opening is a little like a men's cologne. The base is cleaner, much more polite and it retains some of that sheer, cool clarity of the opening. It doesn't last long, at least in the moderate application that a small mini splash bottle requires. But it's still very pleasant. I would have been very happy to see it resurrected so I could give the husband a full bottle and instruct him to spray with abandon.
Moment Supreme, together with the other Patou Ma Collection scents has been discontinued years ago. Bottles can still be found here and there, especially of the eau de toilette.
Elena of Perfume Shrine has written in great depth about the Ma Collection. You can find it here.
Vintage Moment Supreme ads (1947 and 1965): vintageadbrowser.com