I just received a tiny half-full sample bottle of Occur, probably something an Avon lady used as a demonstrator in the early 1970s. What a great, gutsy fragrance! I adore all chypres, and I'm going to find some more of this as soon as I can. Occur strikes me as a perfect, classic vintage chypre: woody, smoky, resinous, sharp, animalic, not too floral. Just beautiful.
Too bad it's been discontinued, but ... it would have had to be reformulated anyway.