I have no way to see what the fill line is. I can feel and hear a lot of liquid in the bottle sloshing around. I feel confident saying it is at least 80% full and may be even moreso, this was from the estate of a perfume collector and about 95% of her stuff is/was unused/new. Bottle and box do show wear.
Smoke-free home.
This is a vintage perfume. Although it has been stored carefully, any and all perfumes can change/turn scent over the years. As well, different lots manufactured at different times can smell different because the company changes the formulation. Therefore, this may not smell the same as one you currently have or as you remember.