Well, it is clearly meant to smell like the original 1947 floral-chypre, but it's simply not at all as good - I wouldn't buy a bottle. It reminds me of one of those drugstore "If You Like..." versions - recognizable but completely unsatisfying. I would say that if you once knew and loved Miss Dior, but haven't smelled it in ages and remember it very fondly and long to smell it again, Miss Dior "Original" might trigger a memory, perhaps, but I doubt you'll find the bliss of deep nostalgia that you were seeking, sorry to say. Rather devastating, actually.
However, if you're not familiar with the vintage, the new stuff really isn't bad ...it's actually pretty nice ...a touch boring, but still much better than most new releases I've smelled, which is the least I'd expect from Dior. It's just not Miss Dior.