I managed to get a bottle of a 1970s version of this scent from my mother's vintage collection, and it's heavenly. It smells quite stuffy and balsamic in the bottle, but on the skin it transforms into a wonderful dusty, sultry, summery scent, not too floral, with what my partner believes to be salty note. I'll be sad when I've used up the tiny bottle, there is nothing I can think of that can match this among contemporary perfumes.
I used to wear this ages ago. And I still miss it sorely. As far as I remember, it began with fresh bergamotte notes but quickly developed its heavier, more sensuous undertones of yasmine, rose and oak-moss.
I always liked the bitter-fresh bergamotte which hinted at an energetic and emancipated woman, whereas yasmine and rose promised femininity and eroticism.
Luca Turin reviewed it somewhere and suggested La Perla's "La Perla" as a substitute. Not for me - I still deplore Ellipse's demise and I am still looking for something to replace it in my wardrobe.